Mordechai Werdyger is an American Hasidic Jewish singer and songwriter popular in the Orthodox Jewish community. As the son of famous Cantor David Werdyger he is known by his pseudonym Mordechai Ben David (Hebrew: מרדכי בן דוד‎, lit. Mordechai, son of David) or its acronym MBD. He has produced over 30 albums over the past 40 years and performing wordlwide. He has starred in the popular charity concerts HASC and Ohel for almost two decades.