New Jersey Symphony President Goes Down Under André Gremillet is leaving as president and chief executive of the New Jersey Symphony Orchestra to become managing director of the Melbourne Symphony Orchestra in Australia. Mr. Gremillet arrived in New Jersey in 2007 after a stint as president of an organ-building company near Montreal. One of his main accomplishments was to secure the conductor Jacques Lacombe as music director. The New Jersey Symphony said Susan Stucker, its vice president for operations and general manager, would serve as interim president while Mr. Gremillet's successor is sought. The Melbourne position came open when Matthew VanBesien left to become executive director of the New York Philharmonic.