NPR "Morning Edition" feature (Feb 7 2005)

The Barrons: Forgotten Pioneers of Electronic Music
by Susan Stone

The 1956 sci-fi thriller Forbidden Planet was the first major motion picture to feature an all-electronic film score—a soundtrack that predated synthesizers and samplers. It was like nothing the audience had seen—or heard. The composers were two little-known and little-appreciated pioneers in the field of electronic music, Louis and Bebe Barron.

http://www.npr.org/templates/story/story.php?storyId=4486840