Ringo Starr had approached Marc Bolan in 1971 with an idea to include him in a series of documentary films about superstars of the era. These plans never came to fruition, but when Ringo discovered that Bolan was intent on filming the Wembley shows, the idea was revived, and so a deal was struck to make a movie (50/50 between Apple and Bolan's Wizard Artists company) with a working title of 'T.Rex In Concert'... The shows were kept simple: the stage effects ran to little more that two enormous blow-up photos of the show's protagonist, with popular DJ Emperor Rosko playing MC for the night. Cameraman Ringo crouched in the pit at the front of the stage. A session at the Beatles' Apple Studios in May 1972 also brought together Marc's chums Elton John (piano) and Ringo Starr (additional drum kit) who joined T.Rex for a unique collaboration. In addition, a separate four-song acoustic set was filmed in the grounds of John Lennon's mansion at Tittenhurst Park, Ascot.