Well, I did not record a video but I can confirm that after training to hear the different kinds of triads for a while, it's now much easier to recognize what kind of triad was played.
I treat the introduction course as a way to test my existing abilities and when I find a topic that needs training ...

How about logging out and showing the basic functionality there? I tried that once and it seems that there's a separate set of results for that. And before starting to practice again, you log in again.

By the way, I had a similar thought for my choir and I just showed them my demo results and how ...

I sing and I brought around 30 more singers with me.