There are two golden rules for an ____: start together and finish together (Thomas Beecham) (9)

I believe the answer is:

orchestra

(Other definitions for orchestra that I've seen before include "Big group of musicians playing various instruments" , "Large group of instrumentalists" , "Instrumental group" , "Theatre area for musicians" , "many players" .)

I've seen this clue in The Times and The Sunday Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.