This four-band set is only a sample of Southern metal's breadth, but it's still plenty impressive: As the name might presage, Chapel Hill trio Black Skies are the most Black Sabbath-oriented, blasting thick but nimble grooves and riffs through a glowing, distorted haze. US Christmas is the other stylistic bookend; this Western North Carolina band—at best when its membership breaks the half-dozen mark, with two drummers and bulging keyboard lines—sculpts marathons from the space-rock growl of Hawkwind and the stentorian march of Swans, all anchored by backwoods iconography. Atlanta's Royal Thunder and Chapel Hill's Caltrop add soul to metal in radically divergent ways: Caltrop does so with blistering, blues-moan guitar leads that cut through a menacing rhythmic crew, while Royal Thunder puts the Janis-meets-Mavis vocals of MIny Parsonz out in front of an unpredictable power trio. —Grayson Currin