Songwriter (8)
I believe the answer is:
lyricist
'songwriter' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for lyricist that I've seen before include "Person who writes words for songs" , "Ira Gershwin, perhaps" , "Song writer -- it's Cyril (anag)" , "The one who writes the words for songs" , "Sit Cyril down - he's a songwriter" .)