Innes wrote, composed, and produced the music. He relied on his memory of Beatles music, and not careful later analysis, to create sound-alike songs. Innes assembled a band (himself, John Halsey, Ollie Halsall, Andy Brown, and Ricky Fataar) and the group played in a London pub to gel. During Rutles performances and studio recordings, Innes took lead on the songs that resembled Lennon's; Halsall sang on most McCartney-esque tunes; Fataar sang the Harrison songs; and Halsey sang a Ringo Starr-type song. Idle mimed to Halsall's singing and Brown's bass playing in the completed film. Halsall appeared in the film as "Leppo", the fifth Rutle who in the earliest years "mainly stood at the back". Brown did not appear in the film.