Out of everyone Paul McCartney has ever collaborated with, he declared this one musician a true "genius" as their studio sessions left him in awe.

After watching the Beatles' iconic rooftop concert, Paul McCartney was inspired to revisit his iconic Höfner bass.

Daryl Hall and Elvis Costello & The Imposters with Charlie ... with a wide variety of other artists, including Paul McCartney and Burt Bacharach. He currently performs with The Imposters.