The Most Music. Period. The Rock Band 3 disc soundtrack contains 83 of the best bands from around the world including bands that have never appeared in a music game and support for existing Rock Band tracks (previous Rock Band discs downloaded songs an. Redesigned Music Library - Create and save set lists and share them with your friends online. Improved song sorting makes it easier to find the songs you like-and hide the songs you dont. Song recommendation system will recommend new songs for you based. Expand the Band - Keyboard and Vocal Harmony. In addition to guitar bass drums and solo voice Rock Band 3 introduces 3-part vocal harmonies and-for the first time ever-keyboard Up to 7 players can play together for the ultimate social gaming experie