His score for Triple Echo is very beautiful, scored for orchestra and Ondes Martenot. Also he wrote some lovely music for a short film called The Return (a ghost story), scored for chamber strings and the Ondes again. He's quite a champion of the Ondes!
I recent saw the 1973 film THE HIRELING, which was scored by Marc Wilkinson. It has a dramatic one-and-one-half minute main title that can be heard at the beginning of this clip. The main title seems more attuned to a thriller than to the story of a doomed romantic attraction that is THE HIRELING.