"Norwegian Wood” instrument (5)
I believe the answer is:
sitar
'norwegian wood instrument' 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 "Lasting from morning to night" , "Hindu string instrument" , "Long necked and often plucked" , "Stringed instrument of the subcontinent" , "Guitar-like instrument" .)