1. Chart Beat Thursday: Justin Bieber, Train, Scorpions

    April 01, 2010 4:55 PM EDT '2.0' BECOMES 1: As previously reported , Justin Bieber 's "My World 2.0" arrives atop the Billboard 200 , making the 16-year-old the youngest solo male to top the tally since then-13-year-old Stevie Wonder led the Aug. 24, 1963, chart with "Little Stevie Wonder…