Sound — 10
Led Zeppelin's sound is very amazing from track to track. They take the styles of folk, jazz, and blues and then turn it into rock with an electric guitar. Notably on Stairway to Heaven and Going to California, you can see the slower side of Page, but still musically ingenious. One thing to note is how well Black Dog and When the Levee Breaks were covered, as Black Dog was unique in that it was new lyrically, but the chords were used from another blues song. When the Levee Breaks is a McCoy and Minnie cover, or "rearrangement" with some new lyrical material and unique melody recreation from Page. No matter, Page is an amazing guitarist, easily one of the top 10 of all time. Rock and Roll and Black Dog just jam with catchy chords progressions that just hook you. Very fun to listen to as much of Zeppelin's work is like this, which is one reason of many why they are rock legends. Misty Mountain Hop is just very unique in that it shows a different side of Led Zeppelin that you see every now and then. It's songs like this and Courelselambra that just make you wonder who you're listening too. It shows that even true and tride techniques for song writing can change, and that bands can adapt and create new styles musically without having to write entirely new albums to prove it (like many newer artists). John's drums are near perfect, and when he passes, it's understandable why they broke up. He was an amazing drummer, and one of the best drummers ever, easily matching notes and beats, or just keeping the estranged beats in some of these songs.
Lyrics — 10
Robert Plant has a way with lyrics that not many lead singers can do. He just writes these odd phrases down and matches them in way to the music that you just understand the point that he's trying to make. Many people say that his lyrics written down are "not complete" or "mysterious", but that's the beauty of it, lyrics are like poems: you the listener find your own meaning from them. That alone makes his lyrics simply amazing. On When the Levee Breaks, he reorders the original lyrics, and then adds some of his own to recreate the song in his own fashion (making it an amazing hit). Even each verse, Plant's vocals were processed differently, adding phasing here and there, great song. Mysterious lyrics, with key lines and phrases sang and key points in the verses or chorus to identify main themes from each song, Plant just proves that he is a master lyricist.
Overall Impression — 9
Led Zepplin IV, or ZOSO by most fans, is just an over-all powerhouse of classic rock. Musically in general, it just shows how a group of very talented musicians can come together and create an album of perfection. I would not rate this album all 10s, as I feel that a bands last album can only ever be rated a 10 (as you have to compare it to everything before it, and possible everything to come after it) but it does achieve a high score for it's near-perfection. It's hard to compare Led Zeppelin to many other artists or albums as they were very unique in their style. Mostly just the idea of turning blues and folk music into heavy rock with powerful ballad-like lyrics, just being followed up by pounded-out drums in a rhythmic and melodical fashion as them, it's just music to your ears.