Watch out for the new New School. Groups like Lightheaded are schooled in hip-hop history from Furious Five through Tribe to Jurassic 5, and they fuse all these eras into a tight rocksteady continuum. This art is about poetic delivery, which Lightheaded have in spades-different tones, flows and stanza arrangement, matched with funky beats from Ohmega Watts. Resistance is futile.