Specializing in a unique mix of what might be called bluegrass soul, the SteelDrivers have featured a group of veteran Nashville session players including Richard Bailey on banjo, Mike Fleming on bass, Mike Henderson on mandolin, Tammy Rogers on fiddle, and Chris Stapleton on guitar and lead vocals. Stapleton's bluesy, hoarse, and Tom Waits-like singing really set the SteelDrivers apart in the often generic contemporary bluegrass genre, where a high and lonesome tenor lead vocal is typically heard. Stapleton's passionate croaking gave the SteelDrivers an authentic, aged, and r...