octave rocking
When singers try to scream up, down, and back up again on one note like they're trying to murder their voice just to make the national anthem sound like a war cry.
"I did an octave rock during the World Series and now I can’t even whisper.", @SportsVoice
"The singer at the Super Bowl did an octave rock so loud, the president had to take a nap.", @PresidentsDay
My uncle did an octave rock at the Fourth of July and now his voice sounds like a broken radio.", @FamilyLife