Mary Dibbern teaches master class Nov. 15 UND alum Mary Dibbern will teach a master class for French mélodie and opera, her specialties, from 2 to 4 p.m. Thursday, Nov. 15, at the Josephine Campbell Recital Hall, Hughes Fine Arts Center. Admission is free. Dibbern grew up in Grand Forks, graduated from Red River High School and UND. She is highly esteemed in her profession as a vocal coach and collaborative artist. You can learn more about Ms. Dibbern from her web site at www.mary-dibbern.com/