Very interesting idea! Writing, art and especially music and sound design are really good.
The only thing I didn't like was the 'blip' when you loose the rhythm. I thought it was too harsh, because when it happens you get a lot of that sounds, stressing me even more out, which I think is not the intend of the game :D Maybe something softer would work or some kind of soft reset / center mechanic where you center yourself and get back into the rhythm on your own term.
Anyway, great entry!