BLues-rock cover song suggestions

Hey all, happy holidays!
So, my band is doing a local TV taping for a blues show, and was looking for a couple options for covers to do along with our originals. We are a blues influenced folk-rock act. Our instrumentation is : female singer/guitarist, bass, drums, keys/organ and female backup singer. I am only slightly knowledgeable on the old school artists like muddy waters, albert king, etc etc. I know a lot of you will know way more than me, so please shoot me some suggestions! Looking for 2-3 covers or covers of covers to learn and add to the 5 or so songs we are already going to play.
Thanks!

 

She's very versatile. Def not limited to the female ones at all. Aside from maybe Janis Joplin,
Etta James, maybe Joni Mitchell ( shes more folk right? I'm not extremely familiar ). My singer has stated shes not big into Janis, and we've already done an Etta tune, but I'm open to more suggestions. Any others you might recommend?