Apparatus and method for composing music data by inputting time positions of notes and then establishing pitches of notes

Abstract

The display screen displays measure windows corresponding to the first through fourth measures for a melody to be composed. By clicking the play switch on the screen, a background accompaniment performance covering the four measures is played back to indicate the beats in the progressing tempo, thereby representing the rhythm speed. In time to the accompaniment progression, the user inputs note time points by tapping the input switch such as a space key in the keyboard to constitute a rhythm pattern for a melody progression. The measure window has a time axis in the horizontal direction and a pitch axis in the vertical direction. The tap-inputted note time points are exhibited at the corresponding positions along the time axis from left to right. Each point is dragged with the mouse pointer upward or downward to an intended pitch level, thereby establishing a pitch thereof. Alternatively, a pitch variation curve is drawn in the measure window plane to be sampled at the note time points, thereby establishing pitches of the respective note points. Only the pitches of important notes may be inputted, and the remainder may be automatically created in the apparatus according to a prepared algorithm.