Whitesnake did not always suck, in fact they had a archives worth of music a good decade before they belted out the vomit they are known for. In the late 70's Whitesnake was like a hangout for former Deep Purple members. On this album David Coverdale and Jon Lord lay down some solid blues rock with guitar help from the unsung duel lead hero's Micky Moody and Bernie Marsden. I would not call this essential but it certainly rocks. This was Whitesnakes second album.