octaveous
Octaveous is when a trumpet player goes so high it sounds like a dog is screaming and you can't tell if it's the music or the player’s brain exploding.
The trumpet player went so high, it sounded like a dog was screaming. That was octaveous.
At the concert, the trumpet player went octaveous and made everyone laugh.
My uncle plays the trumpet and when he goes octaveous, he looks like he's about to die.