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Formed in 1955, the Compass Players was a Chicago-based improvisational comedy revue group that rose to prominence in the mid-20th century. Co-founded by future comedy legends Mike Nichols, Elaine May, and others, the troupe showcased their improvisational skills, sketches, and satirical humor, influencing subsequent generations of comedic performers and inspiring the off-Broadway show "An Evening with Mike Nichols and Elaine May."