To celebrate its 50th (!) birthday, Animesh and Peter swap stories and share experiences and opinions about an album that many consider to be the root of all heavy metal. Yes, it's the one that has "Stairway To Heaven" on it. It's Led Zeppelin's Untitled fourth album, better known as Led Zeppelin IV.

Catch up with Peter and Animesh at www.hornsuppod.com

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