Few surveying the heavy-rock landscape in the early ’90s would have pegged Clutch as a future cult band. But the Maryland outfit underwent a startling progression, injecting heavy doses of funk and classic-rock swagger into its stomp. Meanwhile, gravel-throated frontman Neil Fallon evolved into a kind of blue-collar griot. As any of the band's many die-hard fans could tell you, this concert promises to be a high-volume blast, especially considering the righteously rollicking nature of Clutch's aptly titled new LP, Earth Rocker. Also onboard here are meat-and-potatoes Austin retro-metalists the Sword.