Details: Import release combines the teen sensation's 2009 release, My World, with his 2010 follow-up My World 2.0 plus the iTunes-only track 'Common Denominator'. Justin Bieber has exploded as a global new media star, with over 100 Million YouTube video views (the first 10 million of them as an amateur, posting his own renditions of favorite songs by Ne-Yo, Stevie Wonder and Usher). from singing in front of President Obama to shutting down malls with hoards of screaming fans, 2009 introduced the world to it's next pop sensation and in 2010 Justin doesn't plan to slow down. 18 tracks. Mercury.