I saw a post recently about not understanding what these have to with learning to play jazz. Years ago Pete Rogine turned me on to these. I’m still playing and teaching them. Sure the rhythms are different than jazz but outside of that, they help you to hear changes linearly, develop picking and fretting hand technique, teach you to develop lines that weave through changes (the same concepts Bach used can be applied to modern sounds), how to resolve dominants.
They’re also musical comfort food in a way. Having a bad day, just play them. As long as you’re playing the right notes it’s almost impossible to not make them not sound good. Play them fast they sound good, slow they sound good, rubato they sound good. Vary the tempo, dynamics and fingerings every time you play them.
The important thing is to work them up to a performance level at any tempo you can play them well, don’t just use them as a means to collect information.
