Band blew their own trumpets? (4)

I believe the answer is:

crew

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'band' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for crew that I've seen before include "Squad" , "Train team" , "A ship's workers" , "Made early call" , "Those who man a ship or aircraft" .)

I've seen this clue in The Guardian.

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