"The Creation” creator (5)
I believe the answer is:
haydn
'the creation creator' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for haydn that I've seen before include "Austrian symphonist, d. 1809" , "Joseph -, prolific eighteenth to nineteenth century Austrian composer" , "The Seasons composer" , "Esterhazy composer" , "Creation composer" .)