Born into a deeply religious family, he trained to be a monk, but abandoned that plan when he learned that the church would not allow him to keep a musical instrument in his cell. His musical career rose to the very heights of his profession, most notably as principal conductor of the Minneapolis Symphony Orchestra for twelve years, followed by his appointment to the New York Philharmonic in 1950, a position regarded as the most prestigious in classical music in the United States. A talented pianist and composer in his youth, Mitropoulos championed difficult, complex newly-composed music, but it was during the time of his studies in Berlin that he redirected his focus from performing and composing to conducting.
But for all his international success and acclaim, he was victimized for his homosexuality. During the time that Mitropoulos and Bernstein were having an affair in NYC, Mitropoulos advised the much-younger Bernstein to get married if he wanted to better his chances at leading a major symphony orchestra. Bernstein, a gay man, took his advice and married an actress – and went on to succeed Mitropoulos as conductor of the New York Philharmonic.
Photo below: Mitropoulos as both soloist and conductor with the Minneapolis Symphony.
At the height of his success as conductor of the New York Philharmonic, Mitropoulos became the subject of rumor and innuendo spawned by the open secret of his homosexuality, and he became a victim of McCarthy-era homophobia. He invariably dodged questions about his bachelor status by claiming "I married my art." Fear of being outed publicly forced Mitropoulos to sublimate his sexual desires, and he claimed that music making was a substitute for his “unlived sex life.”
As support for Mitropoulos waned in NYC, the NY Philharmonic board looked for a replacement that would epitomize the masculine, heterosexual ideal. Ironically, they settled on Leonard Bernstein and named him co-conductor with Mitropoulos for the 1957-58 NY Philharmonic season. Bernstein took over as sole musical director in the fall of 1958. Although Mitropoulos bowed out gracefully, championing Bernstein’s talent, the loss of that job created a wound from which he never fully recovered. During the last years of his life Mitropoulos toured the world as guest conductor of major orchestras, but he succumbed to a third and fatal heart attack in late 1960 while rehearsing Mahler's Third Symphony with the La Scala Opera Orchestra in Milan. He was sixty-four years old.
Note: principal sources for this post are Linda Rapp and Geoffrey Bateman.
This video gives an up-close view of his “baton-less” conducting style – excerpts from a rehearsal and performance with the New York Philharmonic.
Third movement (Mephistopheles) of Franz Liszt’s A Faust Symphony: