Stevie Wonder is opening up about the touching GRAMMYs tribute he pulled off in honor of his late friend, Tony Bennett ... his idea to perform a duet with Bennett at music's biggest night.

"I remember hearing Tony Bennett singing 'For ... we're gonna miss you forever." The singer then kicked off first of several emotional tribute with a posthumous duet, playing the piano and singing ...

In support of his Platinum and Grammy Award-winning CD, Duets: An American Classic ... look into the life and memories of Tony Bennett and his music. Experience the stories behind the songs ...