For the benefit of those on dial-up {or those who don't like to click on hyperlinks}, I think this short blurp that's the 2nd hyperlink tht Scoville provided should be posted here:

"Swamp blues, a minor but interesting genre, originated in the Baton Rouge area where musicians like Slim Harpo, Lightnin' Slim, Lonesome Sundown, and Lazy Lester developed a unique, rocking, Cajun-influenced blues style, captured after 1948 on Excello records. It appealed particularly to British rockers of the 1960s (the Rolling Stones covered Harpo's "I'm a King Bee," for instance, and the Kinks recorded Lazy Lester's "I'm a Lover Not a Fighter") and eventually contributed to the development of zydeco. Among the few surviving exemplars is "swamp boogie queen" Katie Webster. Our selection comes from Lazy Lester's Harp & Soul album, titled "Alligator Shuffle" and available on King Snake Records."

http://www.unc.edu/depts/csas/socult/music/swamp.htm

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Btw, and definitely off-topic, I find the title King Snake Records an interesting one for a blues record company. Here's more on King Snake Records which advertising itself as "Capturing the Groove! Music from the Florida swamps"

The reason why I find the title interesting & fitting is that Blues is so heavily associated with Southern African Americans and so is voodoo. What does voodoo have to do with any of this?

Well, imo, the name "KingSnake" is a reference to the importance of snakes in voodoo beliefs & ceremonies. Snakes were {are} important in the traditional West African religion of the Yoruba {Nigeria, Benin} religion of Vodu {also known as Ifa and Orisha/vodu} and some other traditional African religions not to mention other traditional non-African religions [think "serpents" and "dragons"]. In the United States, in the Caribbean, and in Latin America, the religion of Orisha/Vodu took the forms of Candomble, Santeria, Lucumi, and "voodoo/hoodoo".

See this post about the Snake deity Damballah in the Mudcat thread "Subject: RE: The Color Black & Snakes in Folk Culture thread.cfm?threadid=100016#2000409