When Mariah Carey sang "home of the brave" in public, he successfully sang the G7 # scale and became the highest-pitched singer in music history. In physics, such a high pitch can even affect current and current. Dolphins are the only creatures that can emit such a high scale, but this is because their lungs have a special structure, so Maria's voice can be said to be a biological miracle. In fact, Mariah Carey has broken the world record before. She is the only singer who can sing seven high notes without losing tune.