A PREVIEW OF RADIO CHART PREVIEWS

Two songs are roaring up the T40 chart—first is the week's Greatest Gainer, Shawn Mendes & Camila Cabello's "Senorita" (Island/Epic-Republic). Next, look for Katy Perry's "Never Really Over" (Capitol) to take a big jump up, while Sam Smith joins the chart with "How Do You Sleep?" (Capitol).

And at Modern Rock, Billie Eilish has the new #1 song with "bad guy" (Darkroom/Interscope), while Bastille’s “Joy” (Capitol) enters the Top 10 and Cage The Elephant’s “Social Cues” (RCA) arrives in the Top 15.

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