Violinist Sarah Chang made her orchestral debut with the New York Philharmonic at age 8; she had been admitted to the Juilliard School when she auditioned at age 5. On that occasion she played the Bruch first violin concerto. Now she’s joining the National Symphony Orchestra for a performance of the same concerto, conducted by one of her “musical godfathers,” Kurt Masur. The concerts are April 28, 29 and 30 at the Kennedy Center Concert Hall. A few days ago, Chang spoke from London with Classical WETA’s Marilyn Cooley about Maestro Masur, the Bruch concerto, and even how she chooses her concert wear.