What do you do when you grow up with three musically gifted siblings? Start a band, of course. That's what L.A. vocalist Sydney Sierota did with her brothers Jamie (guitar/vocals), Noah (bass/vocals) and Graham (drums). In a short amount of time, Echosmith has brought its dance-y, starry-eyed anthems, like the summer hit "Cool Kids," from the Sierota home to the American public, opening for acts including Owl City and twenty I one I pilots. And even if you don't recognize their name, you might have heard their song "Come Together" featured in commercials for the 2012 Summer Olympics. Just goes to show, the kids are taking over and we hardly even know it's happening. Their debut album, Talking Dreams, is out now.