TAG, THEY'RE IT

Three tracks from RCA are the biggest gainers at Shazam this week, as Chris Brown's Rhythm-radio rocket "Ayo," Kelly Clarkson's new "Heartbeat Song" (now pumping at Pop) and Jazmine Sullivan's soul-stirring "Let Her Go" make huge leaps. Meanwhile, indie band Matrimony's "Giant" calls out bigtime thanks to a Girlsplacement (aren't we all glad Hannah's in Iowa?) and The Orwells consolidate their power with a Big Brotherly boost from an Apple ad. Just outside the Top 5, Maroon 5's "Sugar" (222/Interscope) makes big strides. For more of what Americans are pointing their phones at, sortable by rank, artist and biggest jumps, go here. Chris Brown is also top mover on the U.K. side, with his labelmate Kid Ink close behind.