Good question. I don’t have any from any of the Blues Masters. I do have a couple Clapton’s. “Unplugged” and “From the Cradle.” Both somewhat bluesy.
Also back before a lot of people knew who Joe Bonamassa was, thru his website he offered a monthly free download. Before he figured out he should be selling those songs instead of giving them away, I was able to put together a pretty good album of some of his early stuff.