Cute art and good take on the theme.  You should be able to hide the mouse cursor within unity fairly easily, but good job.

That first bit was really frustrating to get the timing right, especially since sometimes some really large candies would randomly get in the way and screw up the whole rhythm. I feel like when I did finally get through it, it was more luck than skill. I like the mechanic of shoot for platforms to appear, though.

I think the idea is nice, I had fun, but I would tweak a couple of things like the fall speed, bullet speed, the cursor.