Abstract: A sound generation control apparatus displays in a loop region a music data image corresponding to music data to be generated as time progresses, such that progression of the music data corresponds to a lengthwise position of the loop region. The sound generation control apparatus outputs time information indicating the time that progresses from a start of generation of music sound. The sound generation control apparatus controls the generation of the music sound based on the music data according to a relationship between a lengthwise position of the loop region and a displayed location of the music data image in the loop region. The sound generation control apparatus displays a plurality of the music data images in the loop region, and simultaneously generates a plurality of music sounds corresponding to the plurality of the music data images as the time progresses.

Abstract: A sound generation control apparatus defines a loop region indicating progression of time along lengthwise of the loop region, and displays in the loop region a music data image corresponding to music data to be generated as time progresses, such that progression of the music data corresponds to the lengthwise position of the loop region. The sound generation control apparatus outputs time information indicating a time that progresses from a start of generation of music sound. The sound generation control apparatus controls the generation of the music sound based on the music data corresponding to the music data image and according to a relationship between a lengthwise position of the loop region determined by the time information and a displayed location of the music data image in the loop region.