A lot of younger guys are rediscovering 1970s music. One local CD store owner told me that his store sells more CDs of bands like Led Zeppelin and Pink Floyd than it sells of individual contemporary bands.
With the resurgence of interest in bands like Led Zeppelin, perhaps people might be interested in Led Zeppelin's influences. One of those influences was Willie Dixon. If you look at the songwriting credits on Led Zeppelin's first album, you'll notice that several songs are credited to W. Dixon. This is the W. Dixon the credits are referring to.
Willie Dixon later sued Led Zeppelin, successfully, for taking another of his riffs without giving him credit or royalties.
Led Zeppelin's interest in Willie Dixon was no accident. He's one of the giants of American blues.
This album is a really good introduction to Dixon's music. It was recorded later in his career, when recording technology had advanced dramatically from the days Dixon first started recording. So the sound is a lot better than many of Dixon's earlier recordings.
If you're interested in the roots of rock and blues, Willie Dixon is a bluesman you should know about.