: At age 19, while playing cello in Rio de Janeiro, he stepped in at the last minute to conduct Aida from memory, launching his career overnight.
Letter to Arturo Toscanini from Bruno Walter - NYPL Digital Collections arturo toscanini
: In 1937, NBC created an orchestra specifically for him, allowing his weekly radio broadcasts to reach millions across the globe. Political Stance and Principles : At age 19, while playing cello in