Yes! Hallfish, I'm glad that this project isnt abandoned, when the date came (was it november?) and nothing happened I thought we had missed out on a possible great pixelart music video. Glad to know it's still happening
I generally agree with most that has been said here, But I made an edit where I exagerated a bit two overshots, one in frame 2 and another in frame 14 so that you might see viscerally that the dynamism of the action can still be improved, obviously this is a minor tweak and a lot more can be done but hope this still shows you a general direction in which it can still improve.
PS: for everybody else, if you play this in a pixelart program (ggale for me) at about 5 100ths of a second each frame it improves A LOT, so I think what you get in a browser is a very different experience from what you'll see in the video, it'll look a lot better than what you might think.