Justin Bieber, Taylor Swift Lead Billboard + Twitter Top Tracks Chart
![Justin Bieber, Taylor Swift Lead Billboard + Twitter Top Tracks Chart](http://www.billboard.com/files/styles/promo_225/public/media/justin-bieber-what-do-you-mean-twitter-charts-2015-billboard-650.jpg)
Justin Bieber holds at No. 1 on the Billboard + Twitter Top Tracks chart (dated Sept. 19), as “What Do You Mean?” repeats as the survey’s top song....
Justin Bieber holds at No. 1 on the Billboard + Twitter Top Tracks chart (dated Sept. 19), as “What Do You Mean?” repeats as the survey’s top song....