Pure art somehow bringing great joy (7)
I believe the answer is:
rapture
'great joy' is the definition.
(rapture is a state of bliss)
'pure art somehow' is the wordplay.
'somehow' is an anagram indicator.
'pure'+'art'='pureart'
'pureart' is an anagram of 'RAPTURE'.
'bringing' is the link.
(Other definitions for rapture that I've seen before include "State of bliss and euphoria" , "Ecstasy, seventh heaven" , "Bliss, intense delight" , "transport" , "Intense joy" .)