Piano Duet Play-Along Volume 45-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 Coldplay duets: Clocks Paradise The Scientist A Sky Full of Stars Speed of Sound Trouble Viva La Vida and Yellow.