Musical character article fully embraces (4)
I believe the answer is:
clef
'musical character' is the definition.
(I've seen this in another clue)
'article fully embraces' is the wordplay.
'embraces' indicates a hidden word (I've seen 'embracing' mean this (the solution is embraced by words in the clue)).
'CLEF' is hidden within 'article fully'.
(Other definitions for clef that I've seen before include "Pitch symbol on musical stave" , "Treble or bass sign?" , "Mark determining musical pitch of notes" , "Musical notation on a staff" , "Sign of (musical) pitch" .)