Excellent stuff. In my opinion, Led Zeppelin's most diverse album and definitely a nice introduction to the band. Starts off nice and agressive with "Immigrant Song". I've totally forgotten how "Friends" and "Celebration Day" go, so I won't say anything about them but I remember them being pretty darn cool. "Since I've Been Loving You" is definitely one of Led Zeppelin's best blues numbers. "Out on the Tiles" rocks, pure and simple. "Gallows Pole" starts off nice and easy and builds up to a frenzy. "Tangerine" is a great, sad love song. More nice acoustic folky-type stuff on "That's the Way". And the "Bron-Y-Aur Stomp" is probably the best acoustic rocker ever. The twisted slide blues "Hats Off to (Roy) Harper" where the vocals have absolutely nothing to do with the guitar, amazingly, as one of my friends put it, closes out the album. Classic.