Zafar released a single " Urain Ge " as tribute to victims of APS Peshawar attack in early 2015 , featuring many Pakistani artists . His voice was also featured in the song " DJ " , which was sung by Sunidhi Chauhan for the film '' Hey Bro '' . He then also sang a song for Defence Day , " Hanstay Hanstay "
APS Peshawar attack
2014 Peshawar school massacre
Ali Zafar