Ormandy recorded for RCA Victor in Minneapolis (in 1934 and 1935), and continued with the label until 1942, when an American Federation of Musicians ban on recordings caused the Philadelphia Orchestra to switch to Columbia, which had reached an agreement with the union in 1944, before RCA did so. Among his first recordings for Columbia was a spirited performance of Borodin's "Polovtsian Dances". Ormandy conducted his first stereophonic recordings in 1957; these were not the orchestra's first stereo recordings because Leopold Stokowski had conducted experimental sessions in the early 1930s and multi-track recordings for the soundtrack of Walt Disney's 1940 feature film "Fantasia". In 1968, Ormandy and the Philadelphia Orchestra returned to RCA; among their first projects was a new performance of Tchaikovsky's Sixth symphony, the "Pathetique".