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| Written by | Donald Alan Siegal |
| Date | 1990 |
| Publisher | Alto Prano Music Easy Reader Music |
"I'm So Happy Bein' a Grouch" is a Sesame Street song from Episode 2778.
Oscar sings about all the things he loves about being a Grouch while periodically being annoyed by some of his neighbors (including Maria, the Amazing Mumford, Gordon, and a Muppet infant).