Abstract: Melody and accompaniment audio signals are received and processed to identify one or more harmony notes and a harmony signal is produced based on the one or more harmony notes. Typically the melody note is identified and a spectrum of the accompaniment audio signal and is obtained, and one or more harmony notes are identified based on the melody note and the accompaniment spectrum. The melody, and accompaniment signals can be processed in real-time for combination with the harmony signal in an audio performance. In some examples, audio signals are processed and harmonies generated for subsequent performance based on, for example, MIDI files generated from the audio signals.

Abstract: Generating a musical composition from one or more portions of one or more performances of one or more musical compositions included in a database is disclosed. The method and system include selecting a portion of a pre-recorded composition based on a degree of similarity with the component of the composition that is input; portions that are musically similar but not musically the same as the component may be selected for addition to the composition. The degree of similarity may be based on a ChordScore and/or a ScaleScore of the retrieved portion of the pre-recorded compositions. A ChordScore is generated by comparing chord tones of one or more chords in the pre-recorded portion with chord tones of the input component. A ScaleScore is generated by comparing tones of one or more notes in the pre-recorded portion with tones in a harmonic scale associated with the input component's chords.

Abstract: Tone pitch information is extracted from the received input note information. A scale is determined on the basis of retrieved tonality information. A reference scale note is determined on the basis of the extracted tone pitch information and the determined scale. A tone pitch of a harmony note is determined by counting scale notes which form the determined scale from the determined reference scale note until reaching a scale note designated by the retrieved degree information.

Abstract: A music composition automation system includes logic to assign metadata to an audio recording to divide a melody in the recording into sections, and to identify song form section types for the sections. In addition, logic to associate audio accompaniment with the sections based on the identified section types can be based on a style library, that is arranged to provide data executable by a data processing system to generate musical phrases associated with respective styles. Musical phrases in the style library include metadata specifying characteristics of the phrase according to song form section type.

Abstract: Processor-implemented methods and systems for polyphonic note detection are disclosed. The method includes converting a portion of a polyphonic audio signal from a time domain to a frequency domain. The method includes detecting a fundamental frequency peak in the frequency domain. The method then detects a defined number of integer-interval harmonic partials. If a defined number of integer-interval harmonic partials relative to the fundamental frequency peak are detected the fundamental frequency is recorded as a detected note. This process is repeated for each fundamental frequency until each note in the polyphonic audio signal has been detected. For example, this method allows detection of each note in a strummed guitar chord to provide feedback on the tuning of each string in a strummed chord or allows detection and feedback of the timing and pitch errors for guitar chords played along with a reference track.

Abstract: The game apparatus indicates to a player the slide playing technique that not less than two of fret buttons are operated according to the alignment sequence thereof. When the operation in replay to the indication is evaluated, the game apparatus determines whether the operation for the slide playing technique has succeeded or not, under such condition that with respect to the operations of adjacent two fret buttons, the operation to the preceding fret button to be operated precedingly is detected, the operation to the next fret button to be operated next is detected, and after detecting the operation, the release operation of the preceding fret button is detected, the condition being at least one part of required condition.

Abstract: A system and method that enables a user to generate and manipulate string-instrument chord grids in a digital audio workstation. The system and method for generating a string-instrument chord grid includes receiving first data input and second data input. The first data input can include a chord root note and/or a position for one or more fingering dots. The second data input can include an instrument type and our tuning for one or more strings. Using the received data input, a processor generates an entered string-instrument chord based and displays the entered string-instrument chord on a grid. The processor can also generate and display the musical name of the entered string-instrument chord.

Abstract: A user interface for a virtual musical instrument presents a number of chord touch regions, each corresponding to a chord of a diatonic key. Within each chord region a number of touch zones are provided, including treble clef zones and bass clef zones. Each treble clef touch zone within a region will sound a different chord voicing. Each bass clef touch zone will sound a bass note of the chord. Other user interactions can modify or mute the chords, and vary the bass notes being played together with the chords. A set of related chords and/or a set of rhythmic patterns can be generated based on a selected instrument and a selected style of music.

Abstract: Musical performance/input systems, methods, and products can accept user inputs via a user interface, generate, sound, store, and/or modify one or more musical tones. The user interface can present one or more regions corresponding to related chords. A set of related chords and/or a set of rhythmic patterns are generated based on a selected instrument and a selected style of music. The related chords can be modified via one or more effects units.

Abstract: Generating a musical composition from one or more portions of one or more performances of one or more musical compositions included in a database is disclosed. The method and system include selecting a portion of a pre-recorded composition based on a degree of similarity with the component of the composition that is input; portions that are musically similar but not musically the same as the component may be selected for addition to the composition. The degree of similarity may be based on a ChordScore and/or a ScaleScore of the retrieved portion of the pre-recorded compositions. A ChordScore is generated by comparing chord tones of one or more chords in the pre-recorded portion with chord tones of the input component. A ScaleScore is generated by comparing tones of one or more notes in the pre-recorded portion with tones in a harmonic scale associated with the input component's chords.

Abstract: An information processing apparatus is provided which includes a beat analysis unit for detecting positions of beats included in an audio signal, a structure analysis unit for calculating similarity probabilities, each being a probability of similarity between contents of sound of beat sections divided by each beat position detected by the beat analysis unit, and a chord progression detection unit for determining a likely chord progression of the audio signal based on chord probabilities determined according to the similarity probabilities calculated by the structure analysis unit, each chord probability being a probability of each type of chord for each beat section.

Abstract: Melody and accompaniment audio signals are received and processed to identify one or more harmony notes and a harmony signal is produced based on the one or more harmony notes. Typically the melody note is identified and a spectrum of the accompaniment audio signal and is obtained, and one or more harmony notes are identified based on the melody note and the accompaniment spectrum. The melody, and accompaniment signals can be processed in real-time for combination with the harmony signal in an audio performance. In some examples, audio signals are processed and harmonies generated for subsequent performance based on, for example, MIDI files generated from the audio signals.

Abstract: A manipulator information obtaining unit obtains at least a note name corresponding to a manipulator manipulated. A storage device includes a register configured to store at least possible note names, note names in a history of manipulators manipulated, and key candidates, and a first table configured to store diatonic scale notes for each of the key candidates. A key determination unit compares the note names in a history of manipulators manipulated with the diatonic scale notes for each of the key candidates and determines whether there is a key candidate in which all of the note names in the history of the manipulators coincide with any of the diatonic scale notes of the key candidate, thereby determining a key of a musical composition played by the manipulation of the manipulators, and storing the determined key in the register.

Abstract: A chord detection apparatus capable of detecting a wide variety of chords musically related to realtime performance. Degree name candidates each having a function that can come next are extracted in a first extraction process, degree name candidates corresponding to an interrupted cadence are extracted in a second extraction process, and degree name candidates corresponding to a non-functional chord progression technique are extracted in a third extraction process. The degree name candidates extracted in these extraction processes are developed into chord names according to a current tonality, and one of chords represented by the chord names is selected according to performance data and output to an automatic accompaniment apparatus for sound production.

Abstract: CPU 11 reads from RAM 13 pitch information of each of musical notes composing the music, fingering information for playing the musical notes, and time information of the musical notes, thereby calculating a difficulty level of music. CPU 11 calculates a fingering difficulty level concerning fingering of playing adjacent musical notes based on the pitch information and fingering information, a rhythm difficulty level concerning musical-note duration and timing of key playing based on the time information, and a key difficulty level concerning a key of music based on the pitch information. Further, CPU 11 calculates the whole difficulty level of music based on the fingering difficulty level, rhythm difficulty level and key difficulty level.

Abstract: Methods for automatically analyzing and/or performing music are described. One embodiment concerns a method for assigning chords to a musical score indicative of a sequence of time segments, each time segment comprising at least one note, the method comprising assigning a chord to each time segment responsive to consonance/dissonance relationships between the assigned chord and the notes of at least two of the time segments. Optionally, consonance/dissonance relationships include existence of a dissonant between a chord assigned to a time segment and a note of the time segment and existence of resolution to said dissonant.

Abstract: When musical performance data is input to the electronic musical instrument in accordance with user's operation for musical performance, the electronic musical instrument detects a chord in accordance with the input musical performance data at the defined timing T3 at which the chord detection timing ends. On the electronic musical instrument, furthermore, the application of the detected chord to the musical performance is instructed by user's pedal (foot switch) operation of turning off the pedal. In a case where the instruction to apply the chord has been already accepted at the chord detection timing T3 or in a case where the instruction to apply the chord has been accepted by user's pedal-off operation at a point in time (Tpf) situated between the chord detection timing T3 and the time limit T4, the detected chord is to be applied to the musical performance.

Abstract: Generating a musical composition from one or more portions of one or more performances of one or more musical compositions included in a database is disclosed. The method and system include selecting a portion of a pre-recorded composition based on a degree of similarity with the component of the composition that is input; portions that are musically similar but not musically the same as the component may be selected for addition to the composition. The degree of similarity may be based on a ChordScore and/or a ScaleScore of the retrieved portion of the pre-recorded compositions. A ChordScore is generated by comparing chord tones of one or more chords in the pre-recorded portion with chord tones of the input component. A ScaleScore is generated by comparing tones of one or more notes in the pre-recorded portion with tones in a harmonic scale associated with the input component's chords.

Abstract: Processor-implemented methods and systems for polyphonic note detection are disclosed. The method includes converting a portion of a polyphonic audio signal from a time domain to a frequency domain. The method includes detecting a fundamental frequency peak in the frequency domain. The method then detects a defined number of integer-interval harmonic partials. If a defined number of integer-interval harmonic partials relative to the fundamental frequency peak are detected the fundamental frequency is recorded as a detected note. This process is repeated for each fundamental frequency until each note in the polyphonic audio signal has been detected. For example, this method allows detection of each note in a strummed guitar chord to provide feedback on the tuning of each string in a strummed chord or allows detection and feedback of the timing and pitch errors for guitar chords played along with a reference track.

Abstract: The invention relates to systems, methods, and apparatus for assessing a musical performance of a chord, a chord series, or a chord progression. The performance can include a user's performance of a musical instrument. MIDI or audio notes are input and compared to the notes of music track. An indication can be provided to assess the performance. The assessment can be on the basis of timing and/or pitch errors. A new chord can be displayed to a user based on the assessment of the user's performance of the previous chord.

Abstract: The invention relates to a device (1) for displaying musical relationships, a display element (2) being provided which is situated so it is displaceable in a first direction in a holder (3) and is additionally displaceable via the holder (3) along a base element (4) in a second direction running perpendicularly to the first direction, scales (20, 21, 22), chords (24, 25), and their inverses (28) being displayed on the base element (4), the display element (2) having at least one transparent display field (12), and at least one associated chord (24, 25) with the associated inverses (28) being readable in the display field (12) for each tone of a scale, and the use thereof as a teaching aid for making the theory of harmony in music understandable, further elements (40, 50, 60, 70) of the theory of harmony preferably being readable on the back side of the base element (4).

Abstract: The present invention relates to an information processing device, an information processing method, and a recording medium for analyzing chord progressions more accurately. A featuring quantity extraction unit 41 extracts respectively a probability of given chords appearing simultaneously, a probability of transition from a given chord to another chord, if the given chord appeared, and a probability of transition of a given chord originating from another chord, if the given chord appeared, from chord progressions of musical compositions by analyzing waveforms of said musical compositions. A chord similarity calculation unit 42 calculates the similarities between the chord progressions of musical compositions and the user-input chord progressions based on those extracted these possibilities. A musical composition retrieving unit 43 retrieves musical composition chord progressions similar to the user-input chord progression based on the calculated similarities.

Abstract: To provide a portable chord producing device capable of producing chord sounds by a simple operation. In or on a housing 10 of a portable size, an operation switch 121 with which eight different chord sounds can be designated, and a display screen 11 which also serves as a touch sensor panel are formed. A memory card 20 has a chord data file recorded thereon that is used for letting chord sounds that have characteristics of sounds on a real musical instruments be produced. The chord producing device produces the chord sounds designated by the operation switch 121 through a sound production mechanism in a manner that is associated with a specific touch operation only during the time when it is selected.

Abstract: At a time T0, prior read reproduction is started with a volume of 0. Upon starting the prior read reproduction, MIDI events containing note events are sequentially generated. Each time each of the note events is generated, note data is generated based on these note events and sequentially stored in a note pool 123. At a time T1, actual reproduction is started. After the time T1, the actual reproduction and the prior read reproduction are concurrently performed at a same speed. Accordingly, the prior read reproduction precedes invariably two bars ahead of the actual reproduction. Information pertinent to notes contained in a part from a currently played position to a position two bars ahead of the currently played position can be easily obtained from the note pool 123.

Abstract: CPU 21 decides a current melody tone CM relating to a key depressed at a the leading position of a current beat and a previous melody tone PM relating to a key depressed at the leading position of a beat coming directly before the current beat, based on time information, in particular, beat information, controlling progress of automatic accompanying data in operation in a melody sequence progressing in response to manipulation of a keyboard 11. Further, CPU 21 performs a chord name deciding process to decide a current chord name, based on the decided current melody tone, previous melody tone, and a previous chord name PreCH, or a chord name at the previous beat. When deciding a melody tone, CPU 21 decides the current melody tone CM and the previous melody tone PM based on what number the current beat is in a measure.

Abstract: A device and a method for analyzing an audio datum is described, having a semitone analyzer which is implemented to analyze the audio datum with regard to a volume information distribution over an amount of semitones, and a vector calculator which is implemented to calculate a sum vector over two-dimensional intermediate vectors for each semitone or each element of the definition amount and output an analysis signal based on the sum vector, based on the volume information distribution or a distribution derived from the volume information distribution, which includes a definition amount based on the amount of semitones.

Abstract: Chord to be performed is presented to a user. Chord is detected based on one or more notes performed by the user. When it is not detected that a chord has been duly established, one of the notes performed by the user is detected as a root note of a chord. Comparison is made between the chord presented to the user and the detected chord to make a determination as to whether at least the root note of the detected chord matches the root note of the presented chord. The user is informed of a result of the determination. Thus, not only when the user has accurately executed performance operation for all component notes of the presented chord but also when the user has executed performance operation for only the root note of the presented chord, a chord performance evaluation is made, determining that the user has accurately performed.

Abstract: An audio signal is processed to extract key information by selecting (102) tonal components from the audio signal. A mask is then applied (104) to the selected tonal components to discard at least one tonal component. Note values of the remaining tonal components are determined (106) and mapped (108) to a single octave to obtain chroma values. The chroma values are accumulated (110) into a chromagram and evaluated (112).

Abstract: A system and method that enables a user to generate and manipulate string-instrument chord grids in a digital audio workstation. The system and method for generating a string-instrument chord grid includes receiving first data input and second data input. The first data input can include a chord root note and/or a position for one or more fingering dots. The second data input can include an instrument type and our tuning for one or more strings. Using the received data input, a processor generates an entered string-instrument chord based and displays the entered string-instrument chord on a grid. The processor can also generate and display the musical name of the entered string-instrument chord.

Abstract: An apparatus for enhancing audio comprising a first interface and a harmonizing module is disclosed. The first interface receive a first audio segment from a first source. The harmonizing module is coupled to the first interface. The harmonizing module is configured to identify at least one musical property of the first audio segment; calculate a subset of notes that are harmonious with the first audio segment based on the at least one musical property; and select from the subset of notes to generate an audio track to be played substantially synchronously with the first audio segment. A second interface may also be provided to receive a second audio segment from a second source. In this case, the harmonizing module may be configured to generate the audio track by transforming one or more notes of the second audio segment. A method is also provided.

Abstract: To provide a portable chord producing device capable of producing chord sounds by a simple operation. In or on a housing 10 of a portable size, an operation switch 121 with which eight different chord sounds can be designated, and a display screen 11 which also serves as a touch sensor panel are formed. A memory card 20 has a chord data file recorded thereon that is used for letting chord sounds that have characteristics of sounds on a real musical instruments be produced. The chord producing device produces the chord sounds designated by the operation switch 121 through a sound production mechanism in a manner that is associated with a specific touch operation only during the time when it is selected.

Abstract: A music modification system is provided and described herein, which includes: a) a computer, b) a music element library, c) at least one part-score database, d) a software code that executes a music modification system on the computer, wherein the music modification system accesses or manipulates the information in the music element library and accesses the at least one part-score database, and e) a graphical or audio user interface that is coupled to the computer. Methods of modifying a musical score or piece are described herein and include: a) providing a music element library, b) providing at least one part-score database, wherein the database comprises at least one music score, at least one music pieces, at least one music part or a combination thereof, c) providing an executable music modification system, and d) utilizing the music modification system and the music element library to modify at least part of the at least one part-score database.

Abstract: An electronic keyboard instrument which is capable of easily carrying out an arpeggio performance rich in variety by a simple operation on a touch strip. The electronic keyboard instrument has a belt-like touch strip on which a player slides his finger while touching it to carry out an arpeggio performance. A CPU causes musical tones of respective pitch names included in respective designated component pitch names to be sounded, in a predetermined arpeggio pattern having a predetermined sounding order, according to detected touch positions on the touch strip, for the arpeggio performance. A musical tone generating circuit for generating musical tones for the arpeggio performance is switched between first and second tone generator circuits for generating musical tones based on key-on information detected on swingable keys and a third tone generator circuit dedicated to generation of musical tones for the arpeggio performance.

Abstract: A musical keyboard includes a plurality of white keys and black keys. As a number of keys are depressed simultaneously, a pattern of the depressed keys is judged as categorized in a number of predetermined patterns of depressed keys in view of the white keys and the black keys based on the input note data acquired from the depressed keys. A plurality of types of harmonization are predetermined, from among which a type of harmonization is determined. According to the determined type of harmonization, the input note data representing the notes of the depressed keys are adjusted so that inadequate notes included in the input notes are changed to adequate notes to constitute a chord as permitted by the type of harmonization in view of musical grammar. An unskilled player can play music incorporating improvisation which would need higher musical skill, as the inadvertently erroneous depression of the keys is rectified in the note data processing.

Abstract: Chord to be performed is presented to a user. Chord is detected based on one or more notes performed by the user. When it is not detected that a chord has been duly established, one of the notes performed by the user is detected as a root note of a chord. Comparison is made between the chord presented to the user and the detected chord to make a determination as to whether at least the root note of the detected chord matches the root note of the presented chord. The user is informed of a result of the determination. Thus, not only when the user has accurately executed performance operation for all component notes of the presented chord but also when the user has executed performance operation for only the root note of the presented chord, a chord performance evaluation is made, determining that the user has accurately performed.

Abstract: Methods for automatically analyzing and/or performing music are described. One embodiment concerns a method for assigning chords to a musical score indicative of a sequence of time segments, each time segment comprising at least one note, the method comprising assigning a chord to each time segment responsive to consonance/dissonance relationships between the assigned chord and the notes of at least two of the time segments. Optionally, consonance/dissonance relationships include existence of a dissonant between a chord assigned to a time segment and a note of the time segment and existence of resolution to said dissonant.

Abstract: An information processing apparatus is provided which includes a music analysis unit for analyzing an audio signal serving as a capture source for a sound material and for detecting beat positions of the audio signal and a presence probability of each instrument sound in the audio signal, and a capture range determination unit for determining a capture range for the sound material by using the beat positions and the presence probability of each instrument sound detected by the music analysis unit.

Abstract: Disclosed is a method for generating audio data automatically and a personal terminal and a recorded medium using the same. Disclosed method comprises the steps of: (a) detecting pitch of inputted sound source; (b) generating a unit tone data using detected pith variation information; (c) generating an interval code using ratio information of unit tones included in the unit tone data; (d) generating a harmony code based on the generated interval code; (e) generating an accompaniment template using the harmony code and pre-stored accompaniment related template; and (f) generating an audio data where main melody of the inputted sound source and the accompaniment data are merged. Users can generate polyphonic ringtone sound automatically through a personal terminal itself without downloading.

Abstract: A playback apparatus includes: a first acquiring unit acquiring sound content data; a second acquiring unit acquiring additional information corresponding to the sound content data acquired by the first acquiring unit; and a signal processor performing signal processing on the sound content data acquired by the first acquiring unit on the basis of the additional information acquired by the second acquiring unit and for outputting the processed sound content data.

Abstract: An information processing apparatus is provided which includes a beat analysis unit for detecting positions of beats included in an audio signal, a structure analysis unit for calculating similarity probabilities, each being a probability of similarity between contents of sound of beat sections divided by each beat position detected by the beat analysis unit, and a chord progression detection unit for determining a likely chord progression of the audio signal based on chord probabilities determined according to the similarity probabilities calculated by the structure analysis unit, each chord probability being a probability of each type of chord for each beat section.

Abstract: A method for generating an accompaniment for a recorded audio melody includes providing a recorded audio melody that includes segments; performing a frequency analysis of the recorded audio melody; summing the total duration of each fundamental frequency within a segment of the melody; based on the summing, computing a probability for each possible chord for each segment; based on the computed probabilities, selecting a set of chords for the segments; and outputting the set of chords as an accompaniment for the recorded audio melody. Various other methods, devices, systems, etc. are also disclosed.

Abstract: The invention relates to a method of establishing a harmony control signal controlled in real-time by a guitar audio input signal (GAS), comprising the steps of providing a first input harmony input control signal (FIH) on the basis of said guitar audio input signal (GAS), providing a second input harmony control signal (SIH) on the basis of a voice audio input signal (VAS). providing an input audio extraction representation (IAER) on the basis of said first input harmony input control signal (FIH), establishing a harmony control signal (HCS) on the basis of said input audio extraction representation (IAER) and said second input harmony control signal (SIH).

Abstract: An apparatus for determining a type of chord has a means for providing a reference vector for the type of chord, a means for providing a reference vector from a test signal, and a means for comparing the reference vector with the test signal vector. The means for providing a reference vector is configured to provide, for the type of chord, a reference vector from a plurality of different reference vectors. In addition, the means for providing a test signal vector from the test signal is configured to provide the test signal vector having a plurality of test signal vector elements.

Abstract: For each of a plurality of music pieces, a storage device stores respective tone data of a plurality of fragments of the music piece and respective musical character values of the fragments. Similarity determination section calculates a similarity index value indicative of a degree of similarity between the character values of each of the fragments of a main music piece and the character values of each individual fragment of a plurality of sub music pieces. Each of the similarity index values calculated for the fragments of each of the sub music pieces can be adjusted in accordance with a user's control. Processing section processes the tone data of each of the fragments of the main music piece on the basis of the tone data of any one of the fragments of the sub music pieces of which the similarity index value indicates sufficient similarity.

Abstract: First, an extracting unit extracts chord progression of a tune to be reproduced. Then, a timing detector detects the timing of variation of the chord progression extracted by the extracting unit. Subsequently, an add-tone reproducing unit combines an add-tone with the tune to be reproduced according to the timing detected by the timing detector. The add-tone reproducing unit can also move a sound image to reproduce the tune or reproduce the tune as an arpeggio.

Abstract: A system and method for generating a new composition based on a database of pre-recorded performances of existing compositions. A system and method for generating an automated method for converting existing performances and associated MIDI transcriptions to a database and generating a new composition from the database. Musical improvisations are performed by musicians, in digital audio format. The digital audio data is transcribed to MIDI data and stored in a song file. The tempo, chord symbols used and key signature are input, and added to the song file. The digital audio file is analyzed and markers for the start and the end of phrases are added in a phrase marker text file. The system analyzes the MIDI transcriptions, chords, and phrase marker text. Information about sections and phrases of the solo from the phrase market text are stored in a “Riffs” file.

Abstract: As a player inputs a performance of a music piece by playing a musical instrument or singing a song, an add-on apparatus automatically starts an add-on progression such as an accompaniment to the music piece, a score and word display of the music piece and a picture display for the music piece. The apparatus stores a plurality of accompaniment or score-and-word or picture data files each corresponding to each of a plurality of music pieces. The apparatus recognizes the music piece under the performance inputted by the player, selects the accompaniment or score-and-word or picture date file which corresponds to the recognized music piece, and causes the accompaniment progression or score-and-word display or picture display to start automatically and run along with the progression of the music piece automatically.

Abstract: Disclosed herein is a signal processing apparatus, including: removal means for removing, from a sound signal in the form of a stereo signal, a center component which is a component of sound positioned at the center between the left and the right; extraction means for extracting, from the sound signal from which the center component is removed, first feature quantity representative of characteristics of sounds of different tones of the 12-tone equal temperament within a predetermined range; and decision means for deciding a chord within the predetermined range using the first feature quantity.

Abstract: An apparatus that allows a musical piece to be recomposed by reflecting, for example, the mood, preference, and ambient environment of a listening user in the musical piece in real time. The apparatus includes a rhythm master unit and a rhythm slave unit. The rhythm master unit generates synchronization signals containing a signal having a period corresponding to a measure of a musical piece and a signal having a period corresponding to a beat of the musical piece and also generates musical-piece recomposition information in synchronization with the synchronization signals. The rhythm slave unit recomposes musical-piece data of input music content in accordance with the synchronization signals and the musical-piece recomposition information, generates output musical-piece data, and outputs the musical-piece data to the rhythm slave unit.

Abstract: A music selecting apparatus and method, which are capable to indicate a music piece matching with the sensitivities of the user. A degree of chord change is stored as data for each of a plurality of music pieces, a sensitivity word for music selection is set in accordance with an input operation, and a music piece having the chord change degree corresponding to the set sensitivity word is detected in accordance with the chord change degree of each of the plurality of music pieces.