Glass has composed many film scores, starting with the orchestral score for Koyaanisqatsi (1982), and continuing with two biopics, Mishima: A Life in Four Chapters (1985, resulting in the String Quartet No. 3) and Kundun (1997) about the Dalai Lama, for which he received his first Academy Award nomination.
In 1999, he finished a new soundtrack for the 1931 film Dracula.