Music was not an important part of many variety shows - sometimes not any part. Many writers distinguish music-variety shows (usually hosted by a singer) from comedy-variety shows (usually hosted by a comedian). On programs like "Your Show of Shows," "The Jackie Gleason Show," "The Texaco Star Theater" starring Milton Berle, "Rowan and Martin's Laugh-In," and "The Carol Burnett Show" (among others) there could be the occasional musical guest but music was - at most - a minor part of the show. Music on SNL today, with two music segments each week, is more prominent than in the "golden age" comedy-variety shows. Of course, music was a major part of music-variety programs like "The Dinah Shore Chevy Show" and "The Perry Como Show." A few shows emphasized both music and comedy like "The Danny Kaye Show," "The Gary Moore Show" and "The Dean Martin Show."
Late night shows, like "The Tonight Show" are often categorized as talk-variety shows with interview segments and stand-up acts, not usually seen on classic prime time variety shows.