"Liberty Bell" composer (5)
I believe the answer is:
sousa
'liberty bell composer' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sousa that I've seen before include "John Philip -, composer of famous marches (The Stars and Stripes for Ever)" , "he produced the Washington Post" , "John Philip ..., composer of military marches" , "Composer of "The Stars and Stripes Forever"" , "John Philip --, American march composer" .)