Some of the people interviewed are producer George Martin, The Compleat Beatles's first manager Allan Williams, Cavern Club DJ Bob Wooler, music writer Bill Harry, and musicians Gerry Marsden, Billy J. Kramer, Marianne Faithfull, Billy Preston, Lenny Kaye, and Tony Sheridan.
Head entity: Billy Preston
Tail entity: The Compleat Beatles
Relation (head \u2192 tail): cast member
Inverse relation (tail \u2192 head): character role