Oboe inserts (5)
I believe the answer is:
reeds
'oboe inserts' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for reeds that I've seen before include "Woodwind instruments" , "They vibrate to produce the sound of various musical instruments" , "Music-makers" , "Tall water grasses on lake shore" , "Thatching stalks" .)