- HD 1080
- Runtime: 90m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: William Allen Castleman
- Stars: Kipp Whitman, Dennis Burkley, Connie Strickland, Carol Speed, Diane Lee Hart
- keywords: rape, murder, rock band
- Production_studio: Entertainment Ventures (EVI)
- Slogan: A violent screwed-up world..!
- providers: Night Flight Plus
- The Bummer is featured in the top rankings of 1973
- #96 in Top Thriller Movies of 1973
The manager of a rock band fires the drunken, psycho bass player, who goes on a rape and murder spree.