Article about musical event (7)
I believe the answer is:
recital
'musical event' is the definition.
(I've seen this in another clue)
'article about' is the wordplay.
'about' indicates anagramming the letters.
'article' with letters rearranged gives 'RECITAL'.
(Other definitions for recital that I've seen before include "One's performance" , "Public musical performance" , "Article about musical entertainment" , "(Usually solo) concert" , "Narration" .)