Old-fashioned musicianly blues-rock, as practised by lank-haired individuals around the turn of the 1970s, with some of the virtuosity of Led Zeppelin but a fraction of the imagination.
Bonamassa is an accomplished guitarist; he fills the Gary Moore-shaped hole in the world admirably. And he's assembled an accomplished supporting cast of musicians. They cover Tom Waits, Willie Dixon, Howlin' Wolf, Bill Withers and Robert Johnson. Loudly, since you ask.