Nusrat has Left the Building... But When? is a film made on the metamorphic career of the late Nusrat Fateh Ali Khan, the famous sufi qawwali singer from Pakistan. The film departs from the popular version of Nusrat and goes back to his early roots in pure sufi music before and after he exploded on the international scene. Nusrat's metamorphosis from a genuine popular artiste to a mass produced exotica of the east, left behind many disillusioned listeners and devotees in its wake.