"Tongue Tied" Grouplove

It's been a good few years, but the dance-pop movement is clearly coming to its end, and two new trends have emerged to vie for dominance on Top 40 radio. Will it be a bubblegum revival or an indie surge? Judging by the months-long reign of fun. and Gotye, the latter seems to be winning, which bodes well for alternative rock's latest breakout band, Grouplove, whose single (and former iPod commercial soundtrack) "Tongue Tied" is now climbing the pop charts as well. With its bubbly xylophone flourishes and sprawling chanted chorus, the song certainly has the kind of warm, celebratory vibe that suggests a potential sleeper summer smash. But whether it actually makes that leap into the mainstream in the coming months could say a lot about what the future of popular music holds. B+