Use this sheet music with the Animated Piano that Plays With or Without Sheet Music. The Product ID: 27144511 The sheet music contains one Royalty free song called The Wedding March (Piano Gusto. The trigger is: exit and can be used to play after the couple is married and walks up the aisle. Also, you do not need the piano to play this sheet music, but it will look good on the piano and will give you two songs = the wedding march to use for marching down the aisle is in the piano and the wedding exit is in this sheet music. Without the piano, you will have one song that plays and if you include this sheet music, you will have two songs, the march down the aisle song and the march up the aisle song after the couple is married. Or you can just buy this sheet music without the piano and hide the sheet music to play the Wedding Recessional (exit song) only. Sounds are only 20 sec each.