| Clue | Source | Date |
|---|---|---|
| Classic nonsense song that originally appeared in the 1968 Italian movie Sweden: Heaven and Hell | ||
| Muppets song with nonsense lyrics | New York Times | 29 Aug 2020 |
| Classic 'Muppet Show' song with that 'do dooo do do-do' refrain | Jonesin | 05 May 2020 |