I'm not sure whether this would be considered a cover or original but I used one of Guitar Center's King of Blues back trackings. The track is called Groovin' Blues its in my profile, I used a Pod X3 live into GarageBand to record. Let me know what you think and leave me a link to your stuff and I'll take a look at it as well.
That was cool, nice tone and riffs

Good job
" Free U'R Mind... And U'R AZZ will follow"

- George Clinton