A gallery is hosting New York academician still (2,3,4)
I believe the answer is:
at any rate
'still' is the definition.
(thesaurus)
'a gallery is hosting new york academician' is the wordplay.
'gallery' becomes 'tate' (I've seen this before).
'is hosting' is an insertion indicator.
'new york' becomes 'ny'.
'academician' becomes 'ra'.
'ny'+'ra'='nyra'
'tate' enclosing 'nyra' is 'tanyrate'.
'a'+'tanyrate'='AT ANY RATE'
(Other definitions for at any rate that I've seen before include "if nothing else" , "Whatever may happen" , "regardless of the speed" , "come what may" , "regardless of the cost?" .)