I've never made this much "formal" progress on a musical instrument. I can now play, without too much hesitation, these 36 7th chords: the I IV V progression in all 12 keys, using 4 voicings. This is a significant accomplishment for me, compared to what I do on guitar and banjo. I'm adding the ii and vi chords, 7ths of course (jazz), next.
I can play different voicings of any 7th chord up and down the fretboard.
Practice, practice, practice. And I can't wait until retirement when I can really get into this.
