These four ex-Columbia University students, whose catchy indie-pop music blends elements of New Wave, ska and Afro-pop, have grabbed a lot of attention through blogs, mainstream press and national TV (David Letterman had the group on last week). Rolling Stone ranked “Cape Cod Kwassa Kwassa” No. 67 on its list of the 100 Best Songs of 2007. XL Recordings signed the band — Ezra Koenig, Rostam Batmanglij, Chris Tomson, and Chris Baio — and it has embarked on a national tour. Check them out.