As the internet continues to reinvent the music industry, new artists seem to break at an increasingly young age. Going viral has always been a specialty of the youth, but from Matt Ox to Bhad Bhabie, they're starting to sign deals and take over music IRL, too. 

This list isn't about them. While everyone on this list is finding success one way or another, they're doing it with their voices and songwriting abilities—no gimmicks required. From Steve Lacy's iPhone plug-ins to Clairo's bedroom production, these teenagers are pushing music forward on their own terms and reshaping the industry in the process. These are 20 artists under 20 you should know.