What we can say about Counter-tenors (male altos) 1. They could warn a village of the approach of Vikings 2, They make certain parts of a motet audible only to dogs. 3. Useful as Turkey-Treats for deserving baritones. 4. Nearly as efficient as the full-size floor model 5. Whales will sometimes answer them. 6. More exotic than eggplant. 7. When inverted, blown and squeezed hard they can be made to sound like bagpipes.
(From the "Rest" of RHF)