College town where revolutionary jazz tricky to hum (9)
I believe the answer is:
dartmouth
'college town' is the definition.
(home of the Britannia Royal Naval College)
'revolutionary jazz tricky to hum' is the wordplay.
'revolutionary' is a reversal indicator.
'jazz' becomes 'trad' (trad jazz is a type of jazz).
'tricky' indicates an anagram.
'trad' reversed gives 'dart'.
'to'+'hum'='tohum'
'tohum' with letters rearranged gives 'mouth'.
'dart'+'mouth'='DARTMOUTH'
'where' is the link.
(Other definitions for dartmouth that I've seen before include "Devon town" , "Devon resort" , "port" , "Location of Britannia Royal Naval College" .)