They've got hit records, millions of fans, and the kind of success most musicians only dream of -- and they can't even uncork a bottle of champagne to celebrate their success. Welcome to Billboard.com's 2012 edition of 21 Under 21, our annual ranking of music's most powerful minors.
From bubbly boy bands to hip-hop powerhouses, a sweet K-Pop princess to a trio of Mexican "tribal guarachero" pioneers, rising EDM superstars to international pop icons, these are the fresh faces whose careers will continue to pack the biggest punches over the next 12 months. Get used to them all, because they're just getting started. As a 2012 bonus, we've also picked out 12 stars-to-be that could be hitting the 21 Under 21 radar (and the world's ears) in the near future.
No. 4: Scotty McCreery