Herman's Hermits Heartbeat", "Leaning on a Lamp Post", "Mrs. Brown, You've Got a Lovely Daughter", "A Must to Avoid", "You Won't Be Leaving", and "I'm Henry VIII, I Am" (the last said at the time to be "the fastest-selling song in history"). Leckenby soloed on "Henry", and Hopwood played rhythm guitar on "Mrs. Brown". Despite the group's competent musicianship, some subsequent singles employed session musicians – including Big Jim Sullivan, Jimmy Page, John Paul Jones, Vic Flick and Bobby Graham – with contributions from the band, although the role of session players on Herman's Hermits records has been exaggerated in the rock
Booker T. & the M.G.'s Angeles playing in a Stax Revue, an informal jam session with three of the M.G.'s was recorded in Hollywood in 1965, initiated by DJ Magnificent Montague who played congas. The resulting track, "Hole in the Wall", was issued by Pure Soul Music in October 1965 credited to the Packers with writing shared by Montague, Cropper, Jackson and Jones. The track reached number 43 on Billboard, and made the Top 30 on Cash Box. All other songs released by the Packers had no involvement from Booker T. & the M.G.'s. After a period of commercial decline, Booker T. & the M.G.'s