Plus, Michael Jackson's "Billie Jean" moonwalks to the top 10. Justin Bieber leaves the "Late Show with David Letterman" at Ed Sullivan Theater on June 20, 2012, in New York City. James Devaney/WireImage Trending on Billboard The impact of Justin Bieber ’s buzzy Coachella performances continues to be felt, as his “Beauty and a Beat,” featuring Nicki Minaj , reigns as the biggest song in the world, rising a spot to No. 1 on the Billboard Global 200 and spending a second week atop the Billboard Global Excl. U.S. chart. Another longtime favorite, Michael Jackson ’s “Billie Jean,” blasts to the top 10 of both tallies sparked by the premiere of the hit box office biopic Michael . “Beauty and a Beat” crowns the Global 200 despite drops of 13% to 69.6 million streams and 35% to 13,000 sold April 24-30, according to Luminate. Bieber played the Coachella Valley Music and Arts Festival in Indio, Calif., on both April 11 and April 18 . The song, which hit No.…