In November of that year, New York Philharmonic conductor Bruno Walter became sick and could not conduct an important concert.

VOA: special.2009.08.02

In Salzburg in the mid-1930s, he had the good fortune to work as assistant to two of the day's top conductors, Bruno Walter and Arturo Toscanini.

ECONOMIST: Saluting Solti

It may not be too long, she mused, before a young music student can listen as a computer simulates how each conductor's interpretation changes the way the orchestra sounds, from Mahler to Bruno Walter to Bernstein.

WSJ: Philharmonic Unveils Trove Online