Thanks for the update, Clay!
It is fun to be adding new R37 chords into our swing groove chord practice.
The Jazz Standards lessons are great for practicing R37!
I love my Leavitt Method "paper book" book. I started with the digital version but had to upgrade to the physical version.
The digital version of the book has audio of the exercises but is harder to practice with.
I just started the book over, again, last week. Going for 90 days straight. At least 5 minutes every day.
If don't practice method book for 5 minutes every day, I start over at day one. Like "Wordle" streak :-)
Let's keep trying!
Kurt