Tried this out. I like the concept. As an ok crypt player (finished the game with cadence, melody, dove, dorian, bard) though, I have to say this doesn't feel as intuitive.
The lobby area has a single backbeat (I don't remember the term for that, I'm not sure it's 2/4, it could be a single snare hit in a 4/4). Took me a little while to realise I could only move half the speed.
And then in the first area, I can't quite get a smooth feel. Dashing especially is hard to pull off at any given time. It's also hard to recover
So, hmm, I guess this needs better feedback.
I didn't try very hard (4-5 runs) and was tired (and had a couple of beers when trying that out though), so it's probably mostly on me. Not sure. I might try it again later.