The highest note sung by a human was G10 by Georgia Brown.
✓ TRUE FACT
Guinness World Records credits Georgia Brown with a G10 (an extremely high pitch far above a standard soprano top). Notes in that range are so high they’re near the upper edge of human hearing perception and are typically produced as specialized whistle tones. (Wikipedia)
🤯 "The highest note sung by a human was G10 by Georgia Brown. Glassware everywhere felt threatened."