I've posted a few times over the years about Greg Fleischut, an insanely-talented teenage musician I know. For the last two years, Greg has been gigging around San Francisco with his indie rock band Audiophiles, but his mom just dug up this video from two years ago that reveals Greg's acoustic roots. At the time, Greg was visiting with a couple musician pals in Massachusetts -- Etienne Cremieux and Eric Oliver -- and, of course, they got to jamming, with Etienne on mandolin and Greg (left) and Eric (right) on geetar. It is absolutely incredible, like speed metal bluegrass. The boys were 15 at the time.