Indian leader in song and history (6)
I believe the answer is:
gandhi
'indian leader' is the definition.
(I've seen this before)
'in song and history' is the wordplay.
'in' says the answer is hidden in the clue.
'GANDHI' is hidden within 'song and history'.
(Other definitions for gandhi that I've seen before include "film epic" , "Indian political and spiritual leader, assassinated 1948" , "Spiritualistic Indian statesman" , "Leader of Indian independence movement" , "Indira, Rajiv or Sonia" .)