Handy sort of composer (5)
I believe the answer is:
haydn
'composer' is the definition.
(I know that Haydn is a composer)
'handy sort' is the wordplay.
'sort' indicates an anagram.
'handy' is an anagram of 'HAYDN'.
'of' is the link.
(Other definitions for haydn that I've seen before include "Joseph -, Austr. composer (Farewell Symphony)" , "Esterhazy composer" , "Austrian musician" , "Josef --, prolific composer" , "The Seasons composer" .)