Reed in music fairly noisy (3)

I believe the answer is:

lou

I'm a little stuck... Click here to teach me more about this clue!

'reed in music' is the definition.
(I've seen this in another clue)

I can't explain the rest of the clue.

(Other definitions for lou that I've seen before include "-- Reed, singer" , "man" , "-- Costello, Abbott's partner" , "--- Costello, US comic" , "Male or female" .)

I've seen this clue in the Sydney Morning Herald.

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.