Kenton of jazz (4)
I believe the answer is:
stan
'kenton of jazz' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stan that I've seen before include "- Laurel, comedian" , "- Laurel, Hardy's partner" , "Laurel perhaps" , "Laurel and Hardy, . . . . and Ollie" , "Eminem hit; man's name" .)