English double bassist Danny Thompson, United Kingdom, 2010. He has had a long musical career playing with a large variety of other musicians, particularly Richard Thompson and John Martyn. (Photo by Richard Ecclestone/Redferns)
Bob Dylan (born Robert Zimmerman) performs 'Talkin' John Birch Paranoid Blues' during rehearsals for an apperance on the Ed Sullivan Show, New York, New York, May 12, 1963. After the rehearsal, Dylan was asked to perform a different song for the broadcast, a request he refused; he walked out of the studio and never appeared on the broadcast. (Photo by CBS Photo Archive/Getty Images)
LOS ANGELES – JUNE 11: "The Ed Sullivan Show", featuring The Mamas And The Papas. (From left) Michelle Phillips, 'Mama' Cass Elliot, Denny Doherty and John Phillips on June 11, 1967. (Photo by CBS via Getty Images)
Portrait of American Folk, Pop, & Rock musician Neil Young, of the group Crosby, Stills, Nash, & Young, as he poses in a studio, September 18, 1969. (Photo by Jack Robinson/Hulton Archive/Getty Images)
