SHE'S BACK TO #1   Lady Gaga's Perfect Illusion returned to #1 this week on Billboard's Top Twitter songs. This chart keeps track of the most mentioned songs on Twitter each week.   This is the song's 4th week on the chart:   1st Week: #1 2nd Week: #18 3rd Week: #5 4th Week: #1   SLAY     Source: http://www.billboard.com/charts/twitter-top-tracks/2016-09-24