Frederick Martin Reiner (Hungarian: Reiner Frigyes; December 19, 1888 – November 15, 1963)[1][2] was an American conductor of opera and symphonic music in the twentieth century. Hungarian born and trained, he emigrated to the United States in 1922, where he rose to prominence as a conductor with several orchestras.[3] He reached the pinnacle of his career while music director of the Chicago Symphony Orchestra in the 1950s and early 1960s.