He spent the next four years as an apprentice with Herbert von Karajan and the Berlin Philharmonic .
In 1979 , at the age of 23 , Braunstein became the first American to win the Gold Medal in the Herbert von Karajan International Conducting Competition in Berlin .
Braunstein spent the next four years as an apprentice with Herbert von Karajan and the Berlin Philharmonic .
In 1979 , at the age of 23 , Braunstein became the first American to win the Gold Medal in the Herbert von Karajan International Conducting Competition in Berlin .