September 2020 update
Rhonda and her son, Isaac, made a video of these pieces. The second movement is not complete, but whose complaining? Very happy they did this! Thank you, Rhonda and Isaac!
4/27/19 I think this is as far as I plan to go with these pieces at this point. I still have a couple of ideas that I haven’t pursued. They will have to wait. In the meantime, these are my final versions (unless I hear from someone and figure out ways to improve them).
Many thanks to Jordan VanHemert for his help with these pieces.