Simone of song (4)
I believe the answer is:
nina
'simone of song' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nina that I've seen before include "Al Hirschfeld's 'hidden' daughter" , "One of Columbus's ships in 1492; girl's name" , "Girl" , "hidden crossword message" , "- Simone, US singer" .)