Hi guys, I was wondering if anyone could help me out with the key that Hillbilly Blues by Lynyrd Skynyrd is in. I would like to tab out a nice solo for it, but I don't know what key it is in, and therefore have no clue which scale to base everything off of.

A good chord progression for the song is here, it might help you guys. Hillbilly Blues Tab

I hope that helps some, and any help would be great.