The controls are quite floaty; by which I mean that you have very little ability to make fine-tune adjustments to your position. If you so much as tap an arrow key, your character will go at least one body-width in that direction, and more critically, they'll keep doing that when you release the button. This makes it quite tricky to land on blocks that are just one tile wide.
I got accustomed enough to it, and managed to get to level seven. It's quite frustrating how you can make blocks despawn just by brushing up against the side of them, and the fact that you have very little recourse in that level means that a single mistake can send you all the way back to the start.
The sound isn't great, if I'm honest. I have no idea what mood the music is trying to convey; is it energetic, or laid back? The trumpet stings seem out of place compared to the subdued bass and percussion, and the saxophone lines seem to just meander. And there are no sound effects. Boo.