Eugene Ormandy (born Jenő Blau; November 18, 1899 – March 12, 1985) was a Hungarian-born American conductor and violinist, best known for his association with the Philadelphia Orchestra, as its music director. His 44-year association with the orchestra is one of the longest enjoyed by any conductor with any American orchestra. Ormandy made numerous recordings with the orchestra, and as guest conductor with European orchestras, and achieved three gold records and two Grammy Awards. His reputation was as a skilled technician and expert orchestral builder.

Source: Wikipedia (https://en.wikipedia.org/wiki/Eugene_Ormandy)