(Willis). 7 great piano duets to perform at a recital, play-for-fun, or sightread These popular Broadway hits are appropriate for any age and have been pared down to their essence and wonderfully arranged. In addition, audio files online are available to download or stream if your favorite duet partner is unavailable Titles: Close Every Door (Joseph and the Amazing Technicolor Dreamcoat) * Happiness (You're a Good Man Charlie Brown) * I Whistle a Happy Tune (The King and I) * Matchmaker (Fiddler on the Roof) * On My Own (Les Miserables) * Phantom of the Opera * The Sound of Music.