There is provided a musical sound generation instrument. The instrument includes: a storage unit configured to store song data and audio data therein, wherein (a) the song data includes pitches and time information indicating sound generation timing of musical sounds of a song, and (b) the audio data is accompaniment data for the song of the song data; a musical sound data generator configured to generate musical sound data of prescribed musical sounds, based on manipulations of a plurality of playing elements; and an audio data player configured to read and play the audio data according to elapsed time information obtained by the time information included in the song data. The audio data player includes: a manipulation judging unit configured to determine whether manipulation timing of one of the playing elements synchronizes with the sound generation timing of the song data; and a player controller.