Correct: Lennon and McCartney on backing vocals (Jagger and Richards had earlier sung on "All You Need Is Love" and Jones had played oboe on "Baby You're A Rich Man"). Jones played the mellotron (he did so on several Stones songs) and was praised for his ability to get the percussive effect on the instrument; in 1967 mellotrons were awkward Rube Goldberg-like contraptions that had a delay between hitting the keys and the sound actually coming out. The song is also notable for Nicky Hopkins's driving piano (copied almost note-for-note by Small Faces/Faces/Rod Steward keyboardist Ian McLagan in the coda of Stewart's cover of the Stones' "Street Fightin' Man" on Stewart's debut solo album, "An Old Raincoat Won't Let You Down" (1970, UK), also released as "The Rod Stewart Album" in the U.S. in 1969).
Correct: Lennon and McCartney on backing vocals (Jagger and Richards had earlier sung on "All You Need Is Love" and Jones had played oboe on "Baby You're A Rich Man"). Jones played the mellotron (he did so on several Stones songs) and was praised for his ability to get the percussive effect on the instrument; in 1967 mellotrons were awkward Rube Goldberg-like contraptions that had a delay between hitting the keys and the sound actually coming out. The song is also notable for Nicky Hopkins's driving piano (copied almost note-for-note by Small Faces/Faces/Rod Steward keyboardist Ian McLagan in the coda of Stewart's cover of the Stones' "Street Fightin' Man" on Stewart's debut solo album, "An Old Raincoat Won't Let You Down" (1970, UK), also released as "The Rod Stewart Album" in the U.S. in 1969).