On March 5 a 16-year-old Texan named Austin Mahone posted a video to YouTube… Harlem Shake, which have been viewed more than 500 million times. Watching Mahone do the Harlem Shake is like watching the Internet eat itself: The only way it could be more brain-bending is if the sneezing baby panda came out to shake, too… The Harlem Shake is not simply the latest fad to take up temporary residence in our hips. The craze highlights permanent changes in how the music industry works…