Premiere of Iridescences, for full orchestra Posted on Friday March 2nd, 2012 by admin 2012 March 2nd Iridescences, for full orchestra. Carnegie Mellon Philharmonic Orchestra. Conductor: Keun Oh. Soldiers and Sailors Memorial Hall. Pittsburgh, PA, USA. 10:00 pm. WORLD PREMIERE Iridescences premiere: Keun Oh, conductor