There are some terrific riffs and some toe tapping head banging tracks on Zep II but there are also moments which feel a little self satisfied - the extended riffs, the drum solo, the roll-your-eyes-in-embarrassment euphemisms concerning lemons, the LOTR references. From time to time you start to wonder which blues singer they stole the music from. Undoubtedly influential and heavy metal inspiring, just not worthy of the adulation. There are better Zep albums.