What’s it like to become a music star with millions of fans before being able to legally order a beer to celebrate those achievements? These 21 artists know the feeling. Welcome to Billboard.com’s 2014 edition of 21 Under 21, our annual ranking of music’s most powerful minors, and perhaps the most impressive crop of under-21 stars we’ve ever assembled.
There are international stars, social-media powerhouses, on-the-rise groups and singers that have scored No. 1 smashes on the Hot 100 before their 21st birthday. There’s pop, rock, EDM, hip-hop, country, K-pop, and more genres represented here. Most importantly, there’s a ton of potential on this list -- these 21 artists have already accomplished a great deal, but are safe bets to continue finding success as they edge toward adulthood. For now they’re just kids, but they’re the kids that everyone in music is watching.