Caveman is a band that proves most stereotypes about uppity native New Yorkers totally wrong. Former Park Slope stroller-occupier Matthew Iwanusa and bandmates Jimmy Carbonetti, Sam Hopkins, Jeff Berrall and Stefan Marolakis were nice enough to perch on the rocky banks of the East River on a brisk November day and chat with us at length about their gorgeously textured debut album, CoCo Beware. They then came back to play a set at L Mag headquarters, which you can listen to after the jump. Most of the Brooklyn and outer boroughs-based band has known each other since adolescence, which allowed them to produce an album that, in their words, felt natural, if not easy. The secret? Figuring out the right vibes and crafting slowly with care. Watch Caveman vibe with an in-office performance of “My Time” and “Old Friend,” after the jump.