A classic from the legendary Elmore James, also done back in the day by the great Sonny Boy Williamson before becoming a staple in the Allman Brothers Band's live set... Here's my fairly short version, with a nod to the Allmans but more of an allegiance to the earlier versions. And more bass!
Click the pic or the songtitle to hear it (or right-click to download it)...
Give it a listen + let me know what you think.