Question: Frederick Martin "Fritz" Reiner, was a prominent conductor of opera and symphonic music in the twentieth century, conducting is the art of directing a musical performance, such as an orchestral or choral concert, primary duties of the conductor are what?
Sentence (from "Fritz Reiner"): He reached the pinnacle of his career while music director of the Chicago Symphony Orchestra in the 1950s and early 1960s.
Relevant evidence: No