Oh MAN I love this!! The controls are so bizarre that even just playing it is an intriguingly difficult battle. It does kind of seem funny to me that mashing left/right is the fastest way to move, although you lose a lot of control in doing so! It took me a while to understand the way the guitar blasts work, but I think I chose poorly for my initial minigame, since I played in reverse order. However, I'll review them in chronological order.

Telephone minigame: probably my favourite! It's such a hilariously antagonistic way of doing a task that normally, even in video games, is relatively straightforward. I think the finesse the game asks for shines here, as you can subtly(?) use the guitar blasts to move buttons you don't want to press out of the way.

Dishwashing: a fantastic collision of visual and aural noise. I think I lost at it b/c too many dishes got dirty, and it seems impossible to be 'perfect' at, but I think that's part of the charm that sets it apart. It feels like a way to just take it easy with something that you're not going to be good at, but is fun to see.

Mini-Golf: this is where I learned how to use guitar blasts effectively! Although, funnily enough, I found that roughly half the time the golf ball would decided to bounce backwards. Once it bounced for like, at least 10 seconds, and went all the way from near the end to the very beginning of the course. I think I'd be annoyed about that if the game wasn't so funny to play.

Lawn Mowing: This one tonally make me think of the mini games in No More Heroes (which I haven't played myself), in that it's a combination of hyper mundane tasks done 'realistically' with the novel, bizarre controls of the game. When I later learned that I could mash the left/right keys to move quickly, it became easy to do, but with the endless plains of grass, it's not exactly something you want to excel at?

Cop Mistake: I was unable to die in less than one second. That is my review of it...

All in all, I really look forward to what you to do to make some kind of cohesive world out of this! I like the scattered but consistent word arrangement on the menu. Probably, maybe, you don't want that for the final game, but I think it's ok for a demo to be a radical departure in such respects (such as my own, for Spiko!).

Also, I love the sound effects you use for guitar playing!!

Mini-golf is currently my favorite mode probably because I have some time to try to master the controls. By the time I finished the last hole, I couldn't help but feel that the choice of notes were a missed opportunity. I don't know how they would sound, but I'd be interested in playing minigolf when instead of
[e1 b2 e2 g#2 b#3]
you somehow assigned
[e1 g#1 a2 b2 e2 f#2 g#2] though I realize that that's two extra notes. Perhaps the two extras could be left/right dependent or something. It might sound messier (possibly to the game's detriment), but I kept wanting those notes and not having them especially when the mini-golf themes became more patriotic. I also enjoyed the variegated background-texture on the minigolf courses a lot. I'd like originals for ever section personally because I like that one so much, but I don't know what that might take to do or how it might affect your vision for this.

I like how this enjoyable movement/navigation mechanic is put into various scenarios. If a movement mechanic implies a class of person (such as skateboarder), then their existence becomes so much deeper by putting them in scenarios with a variety of themes and objectives with the same tools. It certainly gives the sense that this is the same character.
I like how "Cop Mistake" gives me the impression that the leisurely (and athletic) existence on the skateboard (and my experience learning it as a player) comes into particular use in a moment of severity. It's kinda like how in Karate Kid (1984) the main character uses the muscle-memory from the chores of sanding floors, waxing cars and painting houses as an involuntary defense.
https://www.youtube.com/watch?v=Bg21M2zwG9Q

As soon as a got a handle on moving with the left and right arrows I was super into this. Feels really good. (maybe lawnmower bit should be first as a nice teaching thing?)

Really love making music in the golf bit and the killallcops20xx.exe bit. Well in cops I just held all the keys I could manage on my keyboard.

(sorry it took me so long to write something, but posting the game here reminded me :) )