As there are a few people requesting that we reinstate a jam track playalong monthly thing, here's one for October.
I've returned to the key of G, as most beginners/intermediates probably have a C harp, thus playing second position, can play in the key of G.
Of course, if you feel adventurous, and I suggest you do, you can always play third position on an F harp. (Though for the sake of ears, maybe played on a low F, if you have one).
We have a slow Blues option, medium, and a fast for those who wish to show us how its done, i.e. the blues player. However, given that there are loads of backing tracks on Youtube, players can choose whichever one they like, or inspires them. These are merely ones I have found.