Specializing in might be called "bluegrass soul", the SteelDrivers bring a passion to their delivery that adds a distinctive flavor, and they're not afraid of adding a forceful grit to the music that adds undertones of blues, vintage R&B, and rock. The group became one of the biggest names in progressive bluegrass after making their debut in 2005, and 2010's Reckless, their second album, was a particularly accomplished release that featured future country star Chris Stapleton on lead vocals and guitar. 2015's Grammy-winning The Muscle Shoals Recordings showcased their second l...