Sound — 9
There is quite a few acoustic songs on this album. They're really good songs and Jimmy Page plays very well. Actually, everyone plays very well. There's only 2 songs where it starts with electric guitar: Black Dog and Rock and Roll - both are Led Zeppelin classics. Led Zeppelin IV's acoustic songs are quite epic, like When the Levee Breaks and Stairway to Heaven. A great sounding album with complex acoustic guitar riffs!
Lyrics — 7
Stairway to Heaven has some of the most recognizable lyrics of all time! And who doesn't love them? They're great. Other songs that I like the lyrics are Black Dog and Rock and Roll. As I read somewhere, one of the lyrical weaknesses is that there's a bunch about weird fantasy themes. Overall the lyrics are a bit weird, but still cool.
Overall Impression — 9
This is my favourite Zeppelin album. It's got pretty much their 3 most known songs: Stairway to Heaven, Black Dog and Rock and Roll. Definately one of my top 10 albums of the 70s. How can an album with Stairway not be great? 36 years later and it's still being played and it's known! I'm a big Led Zeppelin fan so I would surely go buy this again if it went missing.