The film focuses on the life and career of the rock and roll musician Buddy Holly. It features archival footage, interviews with people who knew Holly, and performances by various artists.
Therefore, the "cast" of the film consists of:
* Buddy Holly (himself) through archival footage and recordings
* Various people who knew Buddy Holly: Musicians, friends, family, and colleagues who are interviewed in the film.
The documentary is directed by Peter Bogdanovich, who is also known for films like "The Last Picture Show" and "Paper Moon".
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