A Russian-born conductor who led the Boston Symphony Orchestra for a quarter century.
He studied on a scholarship with the Moscow Philharmonic Society and at the age of 20 he took over his former teacher's spot on the Bolshoi Theatre orchestra.
After he became an American citizen and took over the Boston Symphony, he transformed it from a local institution to one of America's leading orchestras.
He was born near Moscow, Russia where he began learning the violin, cello, and piano from his professional musician parents.
Leopold Stokowski was another prominent conductor, and the man behind Walt Disney's Fantasia.