Blame it on my "one Trek mind," but BK's mention of Sol Kaplan's excellent score for "The Spy Who Came in from the Cold" got me to whip out my "Doomsday Machine" soundtrack CD and look Mr. Kaplan up on imdb.
The CD's liner notes make mention of the lull in Kaplan's career during the '50s. He was blacklisted for refusing to name names for the HUAC. Still, imdb lists more than fifty projects he scored. It may only seem that he didn't do that many movie scores because his output was becoming less frequent during the time when soundtrack albums were becoming more popular. Is that possible?
Anyway, his two scores for "Star Trek," the first season's "The Enemy Within" and the second season's "The Doomsday Machine" contained some of the finest, most stylish and cerebral music written for the series. "Doomsday" in particular is memorable for its driving, throbbing theme for the menacing, funnel-shaped planet-eating device.