Gets rid of part of unfinished symphony (5)
I believe the answer is:
sheds
'gets rid' is the definition.
(to shed is to cast off or get rid of)
'part of unfinished symphony' is the wordplay.
'part of' indicates a hidden word.
'SHEDS' can be found hidden inside 'unfinished symphony'.
'of' acts as a link.
(Other definitions for sheds that I've seen before include "Casts off the outbuildings" , "stores" , "Casts off the outhouses?" , "Single-storey outbuildings" , "Small huts as used in gardens" .)