Walker's career in film began in 1979, when she was hired to play the synthesizers on Carmine Coppola's score for "Apocalypse Now". In 1992, Walker became one of the first female composers to earn a solo score credit on a major Hollywood motion picture - for John Carpenter's "Memoirs of an Invisible Man" (one of Carpenter's few movies he did not score himself - Walker later collaborated with Carpenter on "Escape From L.A."). Shirley Walker served as composer for numerous productions, including films such as "Willard", the first three "Final Destination" movies, and television series such as "Falcon Crest", "", "China Beach", and "The Flash". "The Flash" was one of many collaborations Walker did with composer Danny Elfman. She was his conductor on projects such as "Scrooged" and "Batman".