Eugene Ormandy Tchaikovsky 1812 Overture, Op, 49 Borodin Polovtsian Dances

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.

The History of Mercury Living Presence
The year was 1950. The record industry was recovering from the 'battle of the speeds', which pitted RCA Victor, with its 45-rpm disc, against Columbia Records, inventor of the microgroove long-playing record. (The 78-rpm shellac disc had just suffered a swift demise.) In the aftermath of the protracted struggle, the unexpected happened. Both sides won: the 45-rpm became the preferred speed for popular music at the time and the LP was adopted as the industry standard for classics and other 'long-playing' programs.