Disclosed is a system for sounding a music accompanied by light including: a speaker for sounding a music including plural parts; a light emitter for emitting light; a driver for having the speaker sound the music, on the basis of music data of the music including the plural parts, the music data being included in play data containing both the music data of the music including the plural parts to be played by the speaker and designation data for designating a specific part among the plural parts, the specific part being to be accompanied by the light emitted from the light emitter; and turn-on/off a controller for turning the light emitter on or off in synchronization with a sound of the specific part, on the basis of the designation data for designating the specific part.