Larry only ever wrote one song, and he wrote that with Tony Kaye, I think it was, from Yes.
I don't know how it is now but the assistant stage manager had to understudy several parts. You had to be ready to go on at any time if the actor couldn't make it to the play. I didn't think anything of it.
I believe that music is a force in itself. It is there and it needs an outlet, a medium. In a way, we are just the medium.