 While at the Philadelphia Philharmonic, he introduced Marian Anderson as the first African-American singer to perform there.In 1916 he became music director of the Victor Talking Machine Company (later RCA Victor) alongside Rosario Bourdon, where likewise he (Pasternack) introduced Marian Anderson; and the Stanley Company of America, owned by Warner Brothers.In his role at Victor and with several orchestras he made recordings and conducted programs for many famous singers and instrumentalists of the day, including Enrico Caruso, Fritz Kreisler and Jascha Heifetz.