Sing for an unsung hero: Ali Zafar pays tribute to Ali Sadpara with 'Paharon Ki Qasam' Singer released a heart wrenching music video along with his rendition of the song for the lost mountaineer Singer Ali Zafar has paid a heart wrenching tribute to Muhammad Ali Sadpara, a Pakistani mountaineer who went missing while climbing the K2 on February 9. In his rendition of the song Paharon Ki Qasam – originally sung by Kamal Masood – Zafar has incorporated various traditional instruments, accompanied by a music video that features a series of snippets of Sadpara, along with picturesque B-rolls of the glorious mountains he climbed.