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Documenting specifically for Sandbox:Jim Henson characters, and here's the video for comparison. As exemplified in the included audio file, each individual high voice is Jim Henson's voice sped-up. There's also a couple low-voiced "twelve"s which also sound to be Henson. This Red Book entry also identifies the Greenwich High School football team which seem to be all the group voices. I'm not sure how we'd go about crediting these on the page though; "various voices" or something more specific? β Jon (talk) 00:30, 23 January 2022 (UTC)