Abstract: A method including receiving a first set of performance data corresponding to a first plurality of MIDI-based notes in a first rhythmic order. The first plurality of MIDI-based notes may form a first arpeggio, with each of the first plurality of notes having a corresponding first performance data. The method further includes receiving input data indicating a change to the first performance data corresponding to a note in the first plurality of notes, changing the first performance data for the corresponding note using the input data, receiving a second set of performance data corresponding to a second plurality of MIDI-based notes, and applying the changed first performance data to the second performance data. Applying the first changed performance data includes editing the second set of performance data in real-time by replacing the second performance data with the changed first performance data.

Abstract: An automatic accompaniment generating apparatus capable of generating automatic accompaniment as intended by a user. In an arpeggio sounding data generation mode, when key depression tones are input by a user's key depression operation after arpeggio pattern data is selected and a loop count is set to a value of “1” by the user, the sounding of the key depression tones is started, and the generation of a sounding data list is started based on the tone pitches of the key depression tones and sounding pattern data included in the selected arpeggio pattern data. In the case of the loop count being set to “1”, the reproduction of the sounding data list is completed at the end of one bar, and thereafter only the key depression tones are sounded until a key release operation is performed by the user.

Abstract: An arpeggio notes generating apparatus includes a ROM which stores data defining a plurality of arpeggio patterns and a plurality of groove patterns. An arpeggio pattern is composed of a succession of chord constituent notes to be generated at respectively corresponding timings. A set of data for each note include data to identify the note generation timing, the key number, the duration and the velocity value. A groove pattern is composed of a succession of note generation modifier data sets, and each set is for each arpeggio note and includes data to define amounts of modification to be applied to the data for each note generation. Two arpeggio patterns and two groove patterns are selected in correspondence. The note generation timing, the durations and the velocity values in each arpeggio pattern are individually modified according to the corresponding data in each groove pattern to provide two modified arpeggio patterns.

Abstract: An automatic performance, such as an automatic arpeggio performance or a short-phrase sequence performance, is executed on the the basis of manual performance note data corresponding to key depression on a keyboard, and automatic performance note data are obtained from the automatic performance. The manual performance note data and automatic performance note data are output to an external device after both of the note data are imparted different MIDI channel messages, i.e., channel identification data. The manual performance note data and automatic performance note data can be used properly because they can be accurately distinguished from each other by the different channel identification data. For example, it is possible to avoid the inconvenience that a further automatic performance is executed on the basis of the automatic performance note data.

Abstract: An auto-play apparatus has a ROM which pre-stores arpeggio pattern data including a sequence pattern, a trigger pattern, and a gater pattern, and a tone signal generation circuit for generating tones on the basis of these arpeggio pattern data. The apparatus can execute, in addition to a basic, monophonic arpeggio play according to depression of a keyboard unit, arpeggio plays in various play modes such as a polyphonic arpeggio play allowing to simultaneously produce two or more tones of those that form a chord, an arpeggio play allowing to simultaneously produce all the tones corresponding to ON keys, an arpeggio play allowing to gradually change the volume in a single pitch, and the like, thus broadening expression amplitude of performance.

Abstract: A polyphonic electronic musical instrument is provided wherein a keyboard is used to trigger arpeggiated chords which emulate a strumming guitar sound. Select keys are provided for selecting which notes are included in chords to be strummed. At least one triggering device is also provided for triggering chords. The triggering device is constructed to alternate between two trigger states. The triggering device may be a keyboard key, foot pedal, or other device. The instrument operates in such a fashion that two arpeggiated chords of alternating direction (ascending and descending) may be produced during, and at least partially as a result of, one triggering device cycle from one state to the other and back again.

Abstract: An automatic accompaniment apparatus plays, in real-time, an accompanimental line that is subordinated to a melodic line and formed by a succession of harmonic and nonharmonic tones. The apparatus comprises a key determining unit which determines a key in the current chord interval from a series of chords supplied from a musical performance input unit such as a keyboard, an arpeggio generator which forms the arpeggio portion of accompanimental line in the current chord interval by using the members of the current chord, and a nonharmonic generator which produces the nonharmonic portion of accompanimental line in the current chord interval by selecting nonharmonic tones from a scale having the determined key. In an embodiment, there is further provided a knowledge memory storing knowledge of classifying nonharmonic tones and an accompaniment memory storing accompanimental pattern data forming the basis of the final accompanimental line.