Ustadh Hassan Haffar of Halab (Aleppo) is one of the more famous munshids alive. I was introduced to him by a dear friend, Sidi Firas Jisry of Halab. (At that time, Sidi Firas was intimidated by the size of Ustadh Haffar’s mouth–he ascribed Ustadh Haffar’s singing ability to the size of his mouth. I don’t know about that one… Halabis have their interesting theories.)