Here's one I found and extended a bit. It's a slow blues in Bb. It runs at 60bpm, so if you aren't aren't a speed demon, this one should make you comfortable. Even if you are, it's a nice track for a laid back major sound (or minor, if you prefer).
I'm in through around 2:48
https://paparaptor.com/VJR/SlowBluesInBb60bpm-PR.mp3
I'm in through around 2:48
https://paparaptor.com/VJR/SlowBluesInBb60bpm-PR.mp3