PAUL WILLIAMS
I was very surprised his name hasn't been brought up on the discussion boards to this point. This guy made so many contributions to film music, credited on this soundtrack alone with 7 songs, including Evergreen. He truly is one of the greatest lyricists in American cinema and dominated film contributions in the 70's - 80's, from ASIB to Phantom of the Paradise (one of my favorites) to Rainbow Connection. Talk about range!
He definitely was a "go-to" guy.
Open the pod bay doors, Hal.