Extinct’s first single, “Art Smart” (formerly just “Smart”) has been released to radio. You can buy an actual vinyl copy at the band’s next gig, Nov. 16 at the Bullfinch. That’s right—from unknown Wednesday “new sounds” opening act to headlining “national recording artist” in three short months. … The Blits, by the way, appear to have broken up. (Nobody tells me anything.) So have The Blats. Sonny Blitt has a solo acoustic show during the Hamilton’s Happy Hour Thursday. We are of many minds about this abrupt development, since we had only recently begun to take the band seriously. …