His composition "Mah Nà Mah Nà" (1968) was originally used in Sweden: Heaven and Hell, a 1968 Mondo documentary about Sweden. It was a minor charting single (spending 6 weeks on the Billboard chart and peaking at #55, and reaching #22 in Canada), popularized by The Red Skelton Show, first airing in October 1969, and The Muppets, who covered the song several times; starting on episode 0014 of Sesame Street on 27 November 1969, then The Ed Sullivan Show three days later, and again on the syndicated series The Muppet Show in 1977. The track was also a hit in the UK, reaching number 8 in the UK Singles Chart in May 1977.[2]
^M. Lentz iii, Harris (24 October 2008). "Umiliani, Piero". Obituaries in the Performing Arts, 2001: Film, Television, Radio, Theatre, Dance, Music, Cartoons and Pop Culture. McFarland, Incorporated, Publishers. p. 209. ISBN978-0786412785. Retrieved 5 August 2019.