The Half A Comedy Hour came after the other incarnations of the show.

Actually, I'm not certain of the name of the incarnation of the show I saw it on. It was on years after the other versions of the show, I saw it for two weeks in a row and never again, it had on it the stand-up comedian Gallegher, a delightful ventriloquist, John Hartford, and the singer of that Sears song.

(And this has nothing to do with music, but - does anyone else remember the Smothers Brothers Show? NOT the Comedy Hour, but the sitcom, in which Tom played the dead brother who comes back as an inept angel to try to help Dick?)