An extremely odd 1974 rock musical
written and directed by Brian De Palma
. Part Rocky Horror
, part Faust
, part Phantom of the Opera
, part Hitchcock
and part Twilight Zone
(it even has opening narration by Rod Serling
The film stars Paul Williams (who also wrote all the music for the film), William Finley and Jessica Harper. I'm not generally a big fan of 70s rock and roll, but the music really is extraordinary, and the movie is well worth watching on DVD.
Coincidentally, pay close attention to the end credits. Sissy Spacek is credited as a set dresser. She went on to star in Carrie in 1976 (also directed by De Palma).