Premise: An Evening With Groucho is the title of a 1972 recording at New York City's Carnegie Hall of the last one-man show by American comedian Groucho Marx. Introduced by Dick Cavett, the show was released as a double album by A&M Records. Marx shared family stories and performed songs from Marx Brothers movies. Marvin Hamlisch accompanied Groucho on the piano.
Hypothesis: An Evening with Groucho was recorded less than half a century ago