Pianist Barenboim (6)
I believe the answer is:
daniel
'pianist barenboim' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for daniel that I've seen before include "Biblical prophet thrown into the lion's den" , "-- Deronda (Eliot)" , "Sandinista leader" , "A wise man come to judgement (M of V)" , "Old Testament book" .)