Wilson of the Beach Boys (5)
I believe the answer is:
brian
'wilson of the beach boys' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for brian that I've seen before include "He had a 1979 film "Life"!" , "- Boru, eleventh century Irish king" , "-- Blessed, actor" , "snail animated" , "-- Blessed; -- Eno" .)