You're probably very familiar with the classic blues sound Muddy Waters is known for, but you might not have ever heard his 1968 psychedelic concept album, Electric Mud. After influencing a generation of heavy rockers including the Rolling Stones (who named themselves after one of his songs) to the Animals, Yardbirds, Cream, and Jimi Hendrix, Muddy assembled a group of psychedelic musicians in Chicago and turned the tables on the youngins, and his amps up to 11.

He even covers 'Let's Spend the Night Together' which must have been a dream come true for the Rolling Stones, although the resulting version sounds so legitimately transformed one might assume it was the Stones covering him.

The resulting album is so heavy it caused a meltdown among the blues purists that Muddy had become an icon to, and he was eventually forced to distance himself from it. Despite this, it went on to influence a whole new crop of musicians, from Led Zeppelin to Public Enemy's Chuck D.

It's fantastic summer listening. Turn it all the way up:

It's available as mp3 download for only $5.99 on Amazon here.