"Blue Tail Fly" singer
I believe the answer is:
'blue tail fly singer' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ives that I've seen before include "US composer, d. 1954 - US folk singer, d. 1995" , "US composer, Charles" , "Charles -, American composer (The Unanswered Question)" , "St -, Cornish resort" , "he composed" .)