Terry Kath was one of the greatest rock musicians of all time, yet is unknown to many because he was not promoted as a rock star. His vocals were soulful (the closest I can think of is Joe Cocker). He was a great songwriter. He was a first rank guitarist deserving to be up with Hendrix, Beck, Clapton, Gallagher, Allman, Roy Buchanan (another lesser-known genius). This fine documentary is a great introduction to someone every rock music lover should know.