Mellow Yellow Paul McCartney can be heard as one of the background revellers on this track, but the "quite rightly" whispering answering lines in the chorus is not McCartney but rather Donovan himself. Donovan had a small part in coming up with the lyrics for "Yellow Submarine", and McCartney played bass guitar (uncredited) on portions of Donovan's "Mellow Yellow" album. In 2005, the track was remastered by EMI Records for the "Mellow Yellow" album re-issue. "Mellow Yellow" was covered in 1967 by soul singer Big Maybelle on her album "Got a Brand New Bag". It was also covered in 1968 by British
Big Twist and the Mellow Fellows Big Twist and the Mellow Fellows Big Twist and the Mellow Fellows was an American blues and rhythm and blues group. The frontman was the singer and harmonica player Larry "Big Twist" Nolan (born Lawrence M. Nolan, September 23, 1937, Terre Haute, Indiana; died March 14, 1990, Broadview, Illinois). He began singing in church at the age of six. During the 1950s he sang and played drums in a bar band, the Mellow Fellows, performing everything from R & B, blues and country music. At the beginning of the 1970s he joined with guitarist Pete Special and tenor saxophonist Terry