Q&A: The stories behind the black opera stars of 'I Live to Sing'

Julie Cohen and Kamal Khan met in elementary school in Fairfax County about 40 years ago. Today, Cohen, 49, is the Brooklyn-based founder of BetterThanFiction Productions, a documentary film company; Khan is the director of the University of Cape Town Opera School. "I Live to Sing," a feature-length documentary directed and produced by Cohen, focuses on three of Khan's black students who made their way from humble beginnings in often poverty-ridden townships to excel in opera -- an art form most...