Simple but fun idea. The level design is very good, making the game quite challenging, having to time the movement properly. It was quite hard but I finished it :)
I'm not entirely sure, but I was thinking perhaps the last beep could be different to warn about the jump. I had to look at the meters a little bit too much for my taste, but it should be as intuitive as possible in my opinion. As you change the timing quite often, and in some cases it has quite a lot of beeps, it made me rely a bit too much on UI.
The art is quite nice too (I like the FX, like the feathers for the death).
Well done !