I had no idea that there was a list like this!
But who’s really on the list of the top 10 artists under the age of 21?!
I mean those that are on the list are definitely making it in their careers!
Obliviously Miley Cyrus and Justin Bieber made the list.
And Austin Mahone was able to sneak in as well!
That leaves 7 more slots on the list to be filled!