One of the highest grossing musical comedies of all time, Pitch Perfect tells the story of The Barden Bellas, an all-girl college a cappella group, as they compete against another group from their college to win Nationals. Here are 11 songs and mash-ups from the popular soundtrack: Bellas Finals • Bellas Regionals • Cups • Don't Stop the Music • Let It Whip • Party in the U.S.A. • Right Round• Since U Been Gone • Trebles Finals • and more.