(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 online audio to play along with either the Secondo or Primo part on your own. The book includes access to audio tracks online for download or streaming, featuring Playback+, a multi-functional audio player that allows you to slow down audio without changing pitch. This volume features 8 great duets: Clocks * Paradise * The Scientist * A Sky Full of Stars * Speed of Sound * Trouble * Viva La Vida * Yellow.