2006
1. LULLABY OF BROADWAY – duetto con Dixie Chicks
2. SMILE – duetto con Barbra Streisand
3. PUT ON A HAPPY FACE – duetto con James Taylor
4. THE GOOD LIFE – duetto con Billy Joel
5. THE SHADOW OF YOUR SMILE – duetto con Juanes
6. RAGS TO RICHES – duetto con Elton John
7. THE VERY THOUGHT OF YOU – duetto con Paul McCartney
8. COLD, COLD HEART – duetto con Tim McGraw
9. IF I RULED THE WORLD –duetto con Celine Dion
10. THE BEST IS YET TO COME – duetto con Diana Krall
11. FOR ONCE IN MY LIFE – duetto con Stevie Wonder
12. ARE YOU HAVIN’ ANY FUN? – duetto con Elvis Costello
13. BECAUSE OF YOU – duetto con K. D. Lang
14. JUST IN TIME – duetto con Michael Bublé
15. THE BOULEVARD OF BROKEN DREAMS – duetto con Sting
16. I WANNA BE AROUND - duetto con Bono
17. SING, YOU SINNERS – duetto con John Legend
18. I LEFT MY HEART IN SAN FRANCISCO
19. HOW DO YOU KEEP THE MUSIC PLAYING? – duetto con George Michael