Great, hope you like them. 🙂
I haven’t done videos on tuning systems like Just Intonation and so forth, but I did do one on the origin of the 12-tone system that may be of interest: https://www.youtube.com/watch?v=CFbG-8eYKJU (see video description for one correction).
I’ll watch that tuning video you made with interest — I’ve gotten pretty nerdy with melodica tuning and always welcome more perspectives.