Aasaa Kee Vaar

A Vaar is a heroic ballad — in Nanak's day, the genre sung to celebrate warrior-kings and their battles, to a martial tune (this one is set "to the tune of Tunda-Asraaja"). Guru Nanak takes that popular, rousing form and turns it on its head: the hero praised here is not a conqueror but the One and the True Guru, and the great victory is the transformation of a human heart ("He made angels out of men," P0).