Blakey or Tatum (3)
I believe the answer is:
art
'blakey or tatum' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for art that I've seen before include "This gallery displays paintings" , "For example, Blakey's creative" , "Creative works; skill" , "crafty conduct" , "Drawing" .)