Guitar great Paul (3)
I believe the answer is:
les
'guitar great paul' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for les that I've seen before include "-- Dawson (late comedian)" , "Boy's name (abbr)" , "French definite article" , "- Dawson, Br. comedian" , "-- Dawson, English comic" .)