I don't know. I had the idea for this for forever.
You can press down to go half-speed, left and right to scan through the parts of the chorus.
The audio and graphics go out of sync and I've coded to accomodate for this, but it seems like it's unpredictable. You'll probably hear a glitch as it loops. On my machine the graphics are like .5% slower than the audio. IF YOU REALLY WANTED TO there is this M variable in the code you can tweak.
EDIT: Alternate self-corrupting version.
Just something that looks pretty. If you wait 10 seconds you get different scenes on the TVs. You can hold left and right to alter speed of time passing, press down for forward/reverse.
I bought pico8 like a week ago after my friend kept linking me awesome stuff on the forum here. The "exercise" and "now is fornever" ones were particularly inspiring to me.
On the weekend I sat down to make this scrolling background thing and then I just kept running with it. It's mostly a ton of lines, circles, and the mod operator. There isn't much point to it. You can press left and right to change speed, press up to randomise the palette, and down to reset those changes.
EDIT: 42 stars!