I streamed some performances of these three, but the recordings themselves sounded less than stellar. BB King probably sounded the best, but this just represents a small sampling of each artist. I think that many of these were recorded from live performances, so that is probably the issue. I know that mid 50’s to mid 60’s recording technology can result in a great sound, but I guess that you have to value that at the front end and most of this probably was getting circulated via AM radio and they sound pretty compressed. Some Elvis recordings also sounded less than impressive.
Thanks for the link. I’ll take a look around.