Ursula Mamlok at 90

German composer Ursula Mamlok, a valued instructor at the Manhattan School of Music for nearly 70 years, returns to NYC from her native Berlin to celebrate her 90th birthday with the Klenke Quartet; soprano Lucy Shelton; pianists Marcia Eckert, Joel Sachs and Cheryl Seltzer; and other fine players. Portions of a new documentary will be screened, and Mamlok will be on hand for an onstage interview.