| Clue | Source | Date |
|---|---|---|
| Tenors' high registers | ||
| Singing methods | ||
| 1992 Broadway show that won Tonys for its book and score | Wall Street Journal | 26 Oct 2017 |
| Some doo-wop voices | LA Times Daily | 17 Dec 2015 |
| Some doo-wop voices | ||
| They're high-toned | ||
| Female impersonators use them | ||
| They're high-toned | ||
| High parts | ||
| High parts | ||
| They're high-toned | ||
| Voices of a sort. | ||
| Tiny Tim's notes |