Blues is one of my favourite genres in music so here are some of my backing tracks to help you practice your improvisation and chordal voicings. I have also omitted some instruments in the mix to allow for bass and rhythm practice. Try practising your A Minor Blues over these.
Modal scales are fun to improvise over so I have put together a few tracks to help with this. Please let me know if you need any explanations or have any questions.
Here's
a Country type chord progression - Sting's Fragile in E minor and a Van Morrison classic.