Nusrat Fateh Ali Khan - But once Nusrat Fateh Ali Khan did, there was no looking back. He firmly established himself as the leading qawwal of the 20th century. His incredible voice and his complete mastery of the genre made him a superstar in the Islamic world, especially in Pakistan and India. He sang in Urdu and his native Punjabi, as well as Persian. He was also one of the first South Asian singers to perform before large Western audiences.