Carl Davis was a newcomer to the British theatre when in 1968 he arranged and helped perform the music for my first play, Forty Years On.
I can’t remember who recommended him, but he was tireless, wielding the two dozen not always musical actors into a school choir while himself presiding on stage at the organ. Sitting beside him (if metaphorically at his feet) was the composer-to-be George Fenton, then a schoolboy.
Carl also did some wonderfully rumbustious music for a later play, Habeas Corpus. No more, alas, thereafter; he was always busy.