Player from Bilbao boisterous (6)
I believe the answer is:
oboist
'player' is the definition.
(oboe player)
'from bilbao boisterous' is the wordplay.
'from' says the answer is hidden in the clue.
'OBOIST' can be found hidden inside 'bilbao boisterous'.
(Other definitions for oboist that I've seen before include "Wind player" , "Do I boost the musician?" , "orchestra member" , "Player of woodwind instrument of treble pitch" , "Instrumentalist" .)