As someone else has already said, this crossword is particularly difficult this month. I am also stuck on a few, but different ones to those already asked about.
22a: "Conductor to prevent the German throttling Pole" (10) -a-d-a----
17d: "Choral composer's small piece is brought in three times" (9) m-t---i-t
24d: "Drummer in operas, nothing movre" (5) --n-o
Thanks very much, bibblebub, dannyk13 and Oldred. Well done. I think bandmaster must be the right alternative answer as it fits with the "a" I already have in 6th place, although I think bandleader is a better answer to the clue!