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It is definitely an underrated Zeppelin song. It kind of stands alone in their catalog for it's opening style. The almost screaming singing at the beginning is like a old vintage war song. It's fitting for that movie scene. I get so frustrated when I see yet another sellout of some old material but this one was well placed and thought out. The song then digresses into the repetitive anthem like blues beat that is the sound of Led Zeppelin. Most of their songs that start off power with power start with a strong instrumental presence. Aside from a few quick drum and bass beats, this one gets right into the war cry, which is great.

Trampled Under Foot, Kashmir, Stairway, Misty Mountain Hop, Rock N Roll, All of My Love, Hot Dog, Battle of Evermore, just to name a few start off with some bit of music before jumping into the lyrics. If I thought through all of the albums, I'm sure it would actually end up being a list of almost every song.