I completely missed this album, and Johnny Winter for that matter, in the 70s, and now I'm kicking myself. Winter is just the master of blues guitar, but with heavy rock overtones. In addition to well-chosen covers, there are great self-penned tracks too.
The band includes brother Edgar, who has led bands in his own right, and Tommy Shannon on bass, who latter played with Stevie Ray Vaughan.
The (studio) first CD is marginally the stronger of the two, but there's some good live tracks on the second. I'm not a fan of Tobacco Road by anyone, and you probably don't need two versions of Johnny B Goode. But don't let that put you off, the majority of the tracks are oustanding and the weaker ones are excellent by anyone else's standards.