A performance apparatus capable of reproducing music pieces while making changeover between the music pieces without disturbing the rhythm of exercise, dance, or the like performed by a user to the rhythm of music. A beat position is acquired that will appear in a preceding performance data for the first time after a preparatory time required for changing the reproduction of the preceding music piece to the reproduction of a subsequent music piece elapses from when a music selection instruction is given. The reproduction of the subsequent music piece is started at the same time when the music is reproduced up to the acquired beat position.