Emeli Sandé feat. Kendrick Lamar, ''Next to Me (Remix)''
British people love this lady; her 2012 debut was the best-selling album of the year in the U.K. But despite outspoken fans like Adele and Jay-Z (and this magazine), she hasn't gotten the respect she deserves in the U.S. hence a Lamar-heavy remix. The original track is so good, it feels slightly impolite that he shows up just to brag that he's been ''struck by the fame bug.'' Still, we'll bite, if it helps Sandé catch it too. B+ Melissa MaerzDemi Lovato, ''Heart Attack''
Musically, it's just another sugar-pop rush with an Auto-Tuned chorus, but Lovato's actually kind of funny on this new track, confessing that she controls guys like they're Ken dolls. X Factor Barbie don't play around. B Melissa MaerzKelly Rowland ''Kisses Down Low''
It finally happened: Pop music has run out of sex metaphors used up every last lollipop, whistle, and cherry pie. So now poor, overheated Ms. Rowland has no choice but to explain, in banal sex-ed detail over an unimaginative beat, exactly where she would like her body to be touched, and how. Either that or she just didn't try, which would really be lowdown. C- Adam Markovitz