Over the years John Cale has written the score for numerous films, a TV show and a ballet. He got his first chance in the early 70s, scoring films associated with the Factory (Women in Revolt, Heat). After a slow start a small flurry of soundtracks have been released from the Nineties on.
Most of his soundtracks & scores have not been released as a stand-alone item. Hunting down a DVD or VHS of the movie in question is quite a challenge.
Cale songs feature on movie soundtracks.