Information about art form (5)
I believe the answer is:
genre
'art form' is the definition.
(thesaurus)
'information about' is the wordplay.
'information' becomes 'gen' (gen is a kind of information**).
'about' becomes 're' (regarding).
'gen'+'re'='GENRE'
(Other definitions for genre that I've seen before include "Type or style, of art" , "Brand" , "Artistic or literary category" , "Style/category of art" , "Particular style of art or literature, may be green" .)