About Serge Koussevitzky
Serge Koussevitzky was a Russian and American conductor, composer, and double-bassist, known for his long tenure as music director of the Boston Symphony Orchestra from 1924 to 1949. Koussevitzky's second wife Natalie died in 1942, and he created the Koussevitzky Music Foundations in her honor. In the early 1940s, he discovered a young tenor named Alfred Cocozza (who would later be known as Mario Lanza), and provided him with a scholarship to attend Tanglewood.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.