His teachers included Leonard Bernstein , Seiji Ozawa , and Nadia Boulanger .
During the summers , Braunstein received further education while attending the Salzburg Mozarteum , Fontainbleau , and Tanglewood Music Center .
Braunstein 's teachers included Leonard Bernstein , Seiji Ozawa , and Nadia Boulanger .
During the summers , Braunstein received further education while attending the Salzburg Mozarteum , Fontainbleau , and Tanglewood Music Center .