Acker —, Somerset-born jazz clarinettist associated with song Stranger on the Shore who died in 2014 (4)

I believe the answer is:
bilk
(Other definitions for bilk that I've seen before include "Acker --, jazzman" , "Thwart" , "Bamboozle" , "Defraud; Acker --, clarinettist" , "fleece" .)