Another one is the original "Dating Game," for the first few months starting in 1965!
Though the theme music was the same (just a different rendition), a live rock band ("The Regents"), provided the music for the show, and stood in the area behind the turntables, where Jim Lange made his entrance. Until about 1970 or 1971, a recording of the band's guitar section, playing the time's up signal was used.
A friend of mine emailed Jim Lange wondering why the band departed from the show, and Lange said that some (or all) of the band members were drafted into military service during the Vietnam War.
I've seen a press release for the premiere of the show, confirming the band as part of it, but would love to someday find out if a kinescope/tape of a show, complete with the band, exists!