Tommy band (3,3)
I believe the answer is:
the who
'tommy band' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for the who that I've seen before include "Tommy, Quadrophenia rock group" , "questionable identity?" , "British pop group" , "Loud rock band" , "Rock group (Tommy, My Generation)" .)