They shuffled onto the stage wearing mismatched clothes, nervous smiles, and a kind of awkward energy that made the crowd whisper. Five men, standing stiffly in a line, barely making eye contact with the audience. One had a shirt half tucked in, another kept adjusting his mic. A woman in the front row raised an eyebrow. Someone in the back actually chuckled. No one expected much. In fact, a few people looked down at their phones, already bored. Then the music started. And everything changed. The first note hit like a thunderclap. Harmonies burst from their mouths with precision and…