This was presented really well; the music and art really go well together to give a cool retro-feel.
I did find that I could stick to the lane markings or just ride the wall to avoid all collisions. But if I avoid cheating like that I found the controls were smooth and responsive; the addition of speed changes really throws you out as well.
There's a lot here in what is really a very simple game, all those little bits of polish. High-score would have been a nice final polish touch, but otherwise it's all packaged up well.
Great work, man. Keen to see your next game.