Here Are The 21 Most Influential Musicians Under 21, But Who Reigns At Number 1??!

Age ain't nothing but a number, unless it gives you bragging rights! LOLz!  While they're not old enough to take shots at the bar, these musicians have millions of people jamming to their sick beatz.  Of course, Justin Bieber AND his bod are on the list, but we bet you're wondering who else made the cut and who is