We now have our hands on an alternate mix of the classic "Rock and Roll" that you can hear for yourself right here.

Led Zeppelin IV will be the reissue of the 1971 album, which was actually slated as an untitled release, on October 28th. The band is also releasing Houses of the Holy on the same day.

The reissue features some instant classics from Zep, and it includes a companion disc of other mixes as well.

Check out the alternate mix and hear how much of a difference there actually is below...

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