New article about new instrument (8)
I believe the answer is:
clarinet
'instrument' is the definition.
(clarinet is a kind of instrument)
'new article about new' is the wordplay.
'new' indicates an anagram.
'about' is an insertion indicator.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'article' with letters rearranged gives 'clariet'.
'clariet' enclosing 'n' is 'CLARINET'.
(Other definitions for clarinet that I've seen before include "Blow that!" , "23 instrument" , "Find an instrument in claret" , "It's for playing" , "member of orchestra" .)