Modern work -- revolutionary work with character (3,3)
I believe the answer is:
pop art
'modern work' is the definition.
'revolutionary work with character' is the wordplay.
'revolutionary' says the letters should be written in reverse.
'work' becomes 'op' (abbreviation for opus).
'with' is a charade indicator (letters next to each other).
'character' becomes 'part' ('part' can be a synonym of 'character'**).
'op' written backwards gives 'po'.
'po'+'part'='POP ART'
(Other definitions for pop art that I've seen before include "Creative movement" , "Work done by Warhol" , "Striking pictures of everyday things" , "Artistic movement influenced by commerce and the mass media" , "Marilyn Diptych, perhaps" .)