Eardruma/Interscope's Rae Sremmurd recently shot to #1 on the iTunes singles chart with "Black Beatles," powered in large part by the song's usage in the viral Mannequin challenge videos. "Black Beatles" is also Top 10 at Urban radio and Top 20 at Rhythm. And Bee & El/Sony RAL's Sundara Karma (pictured) just charted at Alternative radio with their breakout jam, "Loveblood," as the band prepares to embark on the first U.S. BBC Presents Tour. What do the two acts have in common? They've both joined our Vibe Raters roundup of buzzing acts poised to break this week.

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