https://youtu.be/E4TRvYAyt3k
https://en.wikipedia.org/wiki/List_of_Sesame_Street_Muppets
Here's Johnny Cash on Sesame Street:
https://www.youtube.com/watch?v=H75eQX006jA
https://youtu.be/yUcWNz4YXlA
https://www.youtube.com/watch?v=_ul7X5js1vE
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