Provided is a playing device which enables that even a rookie can play a note on important sound heads, musically, according to intention. According to different tracks, the sequence data of notes inthe to-be-played music are set, and then when the sequence data of some zone of at least one other track is regenerated from the tracks, the sequence data of the object track in the zone is regenerated at a higher speed than common speed according to calcualted regeneration ratio when regenerated object track begins to be regenerated from regeneration-stopped tracks; then the object track and theother tracks are regenerated at general speed.