on the Muppets song "Mahna Mahna"

http://en.wikipedia.org/wiki/Mah_N%C3%A0_Mah_N%C3%A0

"Mah Nà Mah Nà" is a popular song written by Piero Umiliani. It originally appeared in the Italian film Sweden: Heaven and Hell, but is best known in English-speaking countries from its use in the first episode of The Muppet Show.
[...]
"Mah Nà Mah Nà" debuted as part of Umiliani's soundtrack for the Italian mondo film Svezia, inferno e paradiso (Sweden: Heaven and Hell) (1968), a pseudo-documentary about wild sexual activity and other behavior in Sweden. The song accompanied a scene in the film set in a sauna.

http://www.geocities.com/pieroumiliani/

Ron Redmond wrote to say "I want to let you know that Jim Henson was not the first to use Mah Na Mah Na in a children's TV show. I grew up in the early 70's in Seattle watching J.P. Patches on KIRO channel 7 (a CBS station.) He is a local legend who was on the air for over 20-30 years. He regularly played the original soundtrack version of Mah Na Mah Na on his show long before the Muppets recording was made.