|Written by||Jim Henson|
"The R Machine" is a Sesame Street sketch performed by Ernie and Bert. Bert has made a machine that rings a bell any time somebody says a word which starts with the letter "R". Ernie promptly starts reciting "R" riddles, while Bert protests that he will break the machine. Although the machine eventually explodes, it still responds to the letter R.
- The Muppet Alphabet Album (1971)
- Muppet QRST (single, 1971)
- Bert's Blockbusters (1974)
- Muppet QRST (single, 1976)
- At Home with Ernie and Bert (1979)
- Sing the Alphabet (1996)