Description
Almost perfect! Your little demo page is a great intro to this topic, and I'd love to share it with people. But the two classical examples don't work!
See, the idea of "compound meter" is that there's a triple at a faster level in the hierarchy and a slower duple at the next level, that's how 6/8 works. The problem is, the same music can be written in 3/4 or 6/8, and what matters is where we feel the beat.
The Mozart piano example is so slow that it actually takes longer to get through half of the 6/8 than it does to get through the entire 3/4 of the Tchaikovsky! This makes it impossible for a student to make sense of the difference. A listener can easily hear the two examples the opposite way. It's actually easier and more natural to hear them the opposite as presented. The Mozart sounds like 3/4 and the Tchaikovsky sounds like 6/8! It would be better just switching them even.
To demonstrate this concept effectively, it needs examples that take roughly the same amount of time to get through each cycle.