Senior Prom or Justin Bieber?

If you don’t already know that Justin Bieber is one of the world’s most popular musicians, and inspires such adulation among his fans that he may register as one of the most influential people alive today, just try this story on for size.

The young icon played live for the Today Show on Friday morning, right in the middle of New York City’s Rockefeller Center. Desperate to see their idol,