(Piano Duet Play-Along). The Piano Duet Play-Along series gives you the flexibility to rehearse or perform piano duets anytime, anywhere! Play these duet arrangements with a partner, or use the accompanying CD to play along with either the Secondo or Primo part on your own. The audio CD is playable on any CD player, and also enhanced so PC and Mac users can adjust the recording to any tempo without changing pitch. Features 9 great duets: Alone * Bad Romance * Defying Gravity * Don't Stop Believin' * Endless Love * I Dreamed a Dream * Like a Prayer * My Life Would Suck Without You * True Colors.