 Along with concert footage, the film also features scenes from the rehearsals for the shows, interviews with Berry and members of his family, and "talking-head"-type appearances from a number of musicians, including Bo Diddley, The Everly Brothers, John Lennon (archival footage), Jerry Lee Lewis, Roy Orbison, Little Richard and Bruce Springsteen.As told in the interview section of the Bonus DVD, Berry shot his voice at a cold open air concert the day before the filming of the movie.All of his lead vocals are therefore overdubbed in a studio.