Skilled performer appearing in part I studied (6)
I believe the answer is:
artist
'skilled performer' is the definition.
(I've seen this in another clue)
'in part i studied' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ARTIST' is hidden within 'part i studied'.
'appearing' is the link.
(Other definitions for artist that I've seen before include "Skilful, imaginative, performer" , "Craftsman" , "A painter, sculptor or other creative person" , "Eg, a painter" , "Constable, perhaps" .)