Wizard:  In _ 2007 _ , Justin Bieber was discovered by marketing executive Scooter Braun by complete accident . Under the tutelage of his mentor , Usher Raymond , IV , Bieber spent a year training before becoming the biggest teen hit since Hannah Montana .
Boomstick: Why ? Why is he so popular ?
Wizard: His single titled " Baby " is the most viewed video on YouTube with nearly 600000000 hits .
Boomstick: I mean , it 's just a kid singing out - of - tune songs , saying " Girl " and " Baby " over and over again !