The Lady Is A Tramp (duet with Luther Vandross)
What Now My Love (duet with Aretha Franklin)
I've Got A Crush On You (duet with Barbara Streisand)
Summer Wind (duet with Julio Iglesias)
Come Rain Or Come Shine (duet with Gloria Estefan)
New York, New York (duet with Tony Bennett)
They Can't Take That Away From Me (duet with Natalie Cole)
You Make Me Feel So Young (duet with Charles Aznavour)
Guess I'll Hang My Tears Out To Dry/In The Wee Small Hours Of The Morning (duet with Carly Simon)
I've Got The World On A String (duet with Liza Minnelli)
Witchcraft (duet with Anita Baker)
I've Got You Under My Skin (duet with Bono)
All The Way/One For My Baby (& One More For The Road) Medley (duet with Kenny G)
For Once In My Life (duet with Gladys Knight & Stevie Wonder)
Come Fly With Me (duet with Luis Miguel)
Bewitched (duet with Patti LaBelle)
The Best Is Yet To Come (duet with Jon Secada)
Moonlight In Vermont (duet with Linda Ronstadt)
Fly Me To The Moon (duet with Antonio Carlos Jobim)
Luck Be A Lady (duet with Chrissie Hynde)
A Foggy Day (duet with Willie Nelson)
Where Or When (duet with Steve Lawrence & Eydie Gorme)
Embraceable You (duet with Lena Horne)
Mack The Knife (duet with Jimmy Buffett)
How Do You Keep The Music Playing?/My Funny Valentine (duet with Lorrie Morgan)
My Kind Of Town (duet with Frank Sinatra Jr)
The House I Live In (That's America To Me) (duet with Neil Diamond)