Composer Charles (4)
I believe the answer is:
ives
'composer charles' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ives that I've seen before include "American composer of Three Places in New England, d. 1954" , "US composer, d. 1954 - US folk singer, d. 1995" , "he composed" , "US composer, Charles" , "Charles -, American composer (The Unanswered Question)" .)