The top of the Pop chart is a tight race separated by just a few hundred spins, with Jason Derulo's "Want to Want Me" (Warner Bros.) and Walk The Moon's "Shut Up and Dance" (RCA) battling for who will be the next Number One. Tove Lo's "Talking Body" (Island/Republic) moves into the Top 5, while Taylor Swift's "Bad Blood" (Big Machine/Republic) leaps inside the Top 10 after just one week on the chart. S-Curve/Hollywood's Andy Grammer continues to expand, moving Top 15 with "Honey I'm Good." Joining the chart this week will be Rachel Platten's buzzy anthem, "Fight Song" (Columbia).