I’m no serious scholar of religion, least of all of Islam, but I’m inclined to believe that herein lies Islam’s greatest gift to the world: that by refraining from any visual representation of God it forced human expression of the divine to become concentrated and distilled in sound — never more so than in the voice of one such as Nusrat Fateh Ali Khan, the King of Kings of Qawwali, one of the greatest singers who ever lived.