Which Pakistani musician originally sung Samjhawan for the Punjabi film "Virsa"?
Samjhawan:  The song was originally composed by Jawad Ahmad and sung by Rahat Fateh Ali Khan for the Punjabi film "Virsa". Rahat Fateh Ali Khan: Rahat Fateh Ali Khan (born 1974), is a Pakistani musician, primarily of Qawwali, a devotional music of the Muslim Sufis.
Rahat Fateh Ali Khan