The unstoppable American Sweetheart Taylor Swift (Big Machine/Republic) remains in the #1 spot for the third week in a row with "Bad Blood." However, there are some big changes looming inside the Top 10 as Ultra/Louder Than Life/Columbia's Omi jumps from #6 to #3 with "Cheerleader," with the kind of momentum that will have it on top very soon. Meanwhile XO/Republic's The Weeknd is also on fire, blasting to #7 with "Can't Feel My Face." S-Curve/Hollywood's Andy Grammar continues to climb, landing at #8 for the week with "Honey, I'm Good." Notable moves inside the Top 15 include Sia's "Elastic Heart" (RCA) and the Rachel Patten anthem "Fight Song" (Columbia) which joins the Top 15 . This week's Greatest Gainer is Island/Republic/Hollywood superstar Demi Lovato, who should launch into the Top 20 with "Cool For The Summer." Bolo Productions/Capitol's dance sensation Silento takes a big jump and looks to move Top 30 with "Watch Me." And finally, charting this week will be Jason Derulo's "​Cheyenne" (Warner Bros).