Purely History on Instagram: "Wait for it 🤯 In 2014, a video from the King’s College Choir in Cambridge went viral after one of the choirboys inhaled helium from a balloon and hit an impossibly high note. The moment, captured during rehearsal, showed the young singer and his classmates bursting into laughter as the usually formal setting turned unexpectedly funny. The helium temporarily raised the pitch of his voice, making the sound almost otherworldly. The clip spread quickly across YouTube a