Instrument heard on "Norwegian Wood” (5)
I believe the answer is:
sitar
'instrument heard on norwegian wood' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sitar that I've seen before include "Guitar-like instrument" , "Plucked instrument" , "Lasting from morning to night" , "It takes pluck" , "Stringed instrument of the subcontinent" .)