Orchestra woodwind (4)
I believe the answer is:
oboe
'orchestra woodwind' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oboe that I've seen before include "Double-reed wind instrument" , "Woodwind instrument of treble pitch" , "Instrument used in 1d" , "Reed instrument" , "issuer of notes" .)