Sharon dominated part of musical work (5)
I believe the answer is:
rondo
'musical work' is the definition.
(I've seen this before)
'sharon dominated part' is the wordplay.
'part' indicates a hidden word.
'RONDO' can be found hidden inside 'sharon dominated'.
'of' is the link.
(Other definitions for rondo that I've seen before include "noted work" , "Musical form with repeated theme" , "Musical form with returning theme" , "Musical piece with returning theme" , "Musical piece with a recurring theme" .)