Bob of folk (5)
I believe the answer is:
dylan
'bob of folk' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dylan that I've seen before include "Bob (singer) - Thomas (author)" , "Bob --, US folk singer" , "... Thomas, Welsh writer" , "Bob (singer-songwriter) - Thomas (poet)" , "Popular musician" .)