Their amazing debut album"Rawboned blues duo the Black Keys hail from Akron, Ohio, but a listen to The Big Come Up suggests the Keys may have been raised by Mississippi ridge-runners. While Dan Auerbach's overdriven ax is powered by the same internal-combustion engine that drove blues legends Junior Kimbrough and Fred McDowell, this is no po-faced retro show. There's Wu-Tang Clan-schooled funk in drummer Patrick Carney's fatback beats, and on the cranked-up ""Countdown