sentences:  With an invitation from his older brother, Brian, Murray got his start at The Second City in Chicago, an improvisational comedy troupe, studying under Del Close.In 1974, he moved to New York City and was recruited by John Belushi as a featured player on "The National Lampoon Radio Hour".In 1975, an Off-Broadway version of a "Lampoon" show led to his first television role as a cast member of the ABC variety show "Saturday Night Live with Howard Cosell".