Continuity mistake: When Otis gets off the tour bus and comes over to kiss Josephine, his hair changes from processed to natural, before he kisses her.
Audio problem: Lead singer Dennis Edwards' voice is totally different when singing "Cloud Nine" than it is when he is singing "Psychedelic Shack." you can tell that it is a completely different singer's voice.
Revealing mistake: As a very young Otis Williams listens to The Cadillacs on stage in Detroit, the joint is rockin' with the music, but most of The Cadillacs have no microphones.
Factual error: In a scene set in May 1960, Paul Williams and his group are singing the Maurice Williams and the Zodiacs song "Stay," but Herald Records did not release "Stay" until August 1960.