Large musical instrument (4)

I believe the answer is:

tuba

'large musical instrument' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for tuba that I've seen before include "Player" , "Brass "oompah" instrument" , "Musical instrument -- 5 (rev)" , "music-maker" , "bit of brass" .)

I've seen this clue in the Newsday.com and The Mirror.

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