(Piano Duet Play-Along). Take a trip back to the 60s with these great piano duet arrangements of Beatles classics! Purchase of the book includes separate audio tracks for the Primo and Secondo parts perfect for practice and performance! The audio is accessed online using the unique code inside each book and can be streamed or downloaded. The audio files include PLAYBACK+, a multi-functional audio player that allows you to slow down audio without changing pitch, set loop points, change keys, and pan left or right. 10 songs: All You Need Is Love * Blackbird * Day Tripper * The Fool on the Hill * Here, There and Everywhere * Hey Jude * The Long and Winding Road * Michelle * When I'm Sixty-Four * Yesterday.