Factual error: In the final concert scene, Buddy is shown playing a 1965 Fender Stratocaster, a CBS model with the large headstock. Needless to say, it didn't exist in 1959.
Factual error: When Buddy and the musicians tour bus is towed to the Clear Lake Auditorium for the final concert before the fatal air crash, the canopy states that the concert is on the 3rd of February. The fatal accident that took Buddy, The Big Bopper and Ritchie Valens occurred at 1am on 3rd February 1959 so the canopy should have read 2nd February.
Factual error: The name of the venue where Buddy played his last concert was the Surf Ballroom, not the Clear Lake Auditorium .