.A super precocious, multi-talented and self-taught musician (drums, guitar, piano and trumpet) 15-year-old Justin Bieber was already a phenomenon on YouTube -- putting his impeccable spin on songs from artists like Usher, Ne-Yo and Stevie Wonder -- before the world took notice. Since 2007, Justin racked up over 10,000,000 views purely from word of mouth.

But then he started to bubble up and important folks took notice. Seven months after Justin started posting his vídeos online; the Canadian teen flew to Atlanta, GA to meet with R&B sensation Usher, who quickly took him under his wing,...