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Robert Plant's lyrics were inspired by the work of J.R.R. Tolkien, author of The Lord of The Rings. The references are to the adventures of the Hobbit, Frodo Baggins, as he goes to "the darkest depths of Mordor" and encounters "Gollum and the evil one." Plant later admitted in an audio documentary that he was embarrassed by the Tolkien references. (thanks, Adrian - Wilmington, DE)
Led Zeppelin never performed this live.
Zeppelin recorded this in New York when they were on their first US tour.
The group Train covered this. Their lead singer was once in a band that did entire sets of Zeppelin songs. Producer Brendan O'Brien heard Train's version and agreed to produce their second album.
Often mistaken for bongos, Bonzo is actually hitting a plastic garbage pail throughout the song. (thanks, jim - bethlehem, PA)
This was sampled by the Insane Clown Posse for the song "50 Bucks" on their rare album Psychopathics From Outer Space and was also the single that accompanied The Pendulum #7, a 12-comic series of the group done by Chaos! Comics. (thanks, Bustakap - Lowell, MA)
Don Brewer of Grand Funk
The drummer and one of the primary songwriters in Grand Funk talks rock stardom and Todd Rundgren.
The Garbage drummer/songwriter produced the Nirvana album Nevermind
, and Smashing Pumpkins' Gish
and Siamese Dream