Oboe parts (5)
I believe the answer is:
reeds
'oboe parts' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for reeds that I've seen before include "Thatching stalks" , "Long grasses" , "Grasses at river's edge" , "Stems for pens" , "Woodwind instruments" .)