Long parts of guitars (5)
I believe the answer is:
necks
'long parts of guitars' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for necks that I've seen before include "They connect head to body" , "Kisses amorously" , "Drinks" , "behaves amorously" , "Features of swans and giraffes" .)