Abstract: A musical score block copy forming apparatus has a musical keyboard (1) having a full-scale key group and a chromatic-scale key group, and a function keyboard (2) having function keys, and the like. Data input at the keyboards (1, 2) and data necessary for a musical score forming arithmetic operation are stored in a storage unit (7). The input data and the data stored in the storage unit (7) are subjected to arithmetic processing by an arithmetic processing unit (3). The arithmetic processing unit (3) has a layout change function used when a musical score is formed, and can display a musical score on a display (4) on the basis of an arithmetic result. The musical score displayed on the display is output to an output unit (5) for forming a block copy of the musical score.

Abstract: A musical score display device for a music score processor is formed into a rectangular platelike form so as to be detachably mounted on the processor. The device includes a cable for connecting the display device with the processor. The musical score display device may include an LCD provided with two touch sensors. By pressing the sensors, the next page or previous page of music score is displayed.

Abstract: An apparatus for inputting musical sheet data into a musical-sheet-printing system has a piano keyboard which has diatonic tone keys and chromatic tone keys and which generates first coded data, a function keyboard, a random access memory (RAM) for storing coded data supplied from these keyboards, a read-only memory for storing a permanent program and a conversion table representing a relationship between tonality values and chromatic tone pitches, and a control unit, under the control of the permanent program, for presetting a predetermined number of note data for the coded musical data, storing in the RAM the respective musical data included in the predetermined number of note data, accumulating the respective note data, calculating the respective entropy data in accordance with the accumulated musical data, selecting a tonality value having a maximum entropy, and determining an accidental and a note in accordance with the selected tonality value with reference to the conversion table.

Abstract: An attachment for installation upon a typewriter for applying musical notations to a sheet material and comprising a frame pivotally mounted on the typewriter body, the frame including a bridging member at one end of the frame adjacent the platen of the typewriter and a secondary keyboard at the opposite end of the frame. The bridging member carries rotatable, axially parallel cylindrical members spaced along the length thereof and oriented generally vertically to engage plural rollers oriented axially parallel to the platen and engaged thereagainst. The secondary keyboard carries individual keys, each having depending stems selectively engageable with a spring biased lever when a selected one of said keys is depressed. The keys each represent an imprinting location on a musical staff for application of the musical characters controlled by the principal keyboard of the typewriter.

Abstract: A system for transcribing musical notations onto paper as corresponding notes are played on a piano includes a housing disposable on the piano above the keyboard to produce electrical signals representing the piano keys which are depressed, and a typewriter adapted to type musical notations representing notes onto paper rolled onto a cylindrical, rotatable platen of the typewriter. Also included is a type key actuating device disposable on the typewriter above the type keys and responsive to the electrical signals for depressing type keys corresponding to the musical notes represented by the signals. The type key actuating device includes a plurality of solenoids, each coupled to a different one of the type keys for depressing the key when energized by one of the signals.