Ted Neeley played Jesus Christ in the 1973 film. Other productions have had different actors.
Ian Gillan, lead singer of Deep Purple. Yvonne Elliman, who was a back-up singer for Eric Clapton on his "Ocean Boulevard" album -- and, his girlfriend for a short stint, sang the part of Mary...
Andrew Lloyd Webber and Tim Rice.
I saw it in October of 1971 at the Auditorium Theatre... it was apparently a very short run.
I can't be sure but I think it was Andrew Loyd Webber