Fifties rock and roll act from the "Spidey Fixes the Hum" segment on an episode of The Electric Company. Formerly David Dinger, he forgot the words to a song early in his career and just hummed. It caught on, and he was a big hit until 1960. Then his career hit the skids and he turned into a TV repairman who cheated customers by humming and claiming it was coming from their TV set, then offering to fix it. Spider-Man catches him and reveals his scam.
The episode aired sometime between 1975 when Todd Graff (who plays a kid in the sketch) joined the show, and 1977 when the show ended.
Played by Luis Avalos.