what if APL notation could be played with a piano/chorded keyboard

it's striking that there is so little visualization packaging, afaik, for APL repls. Even a simple SVD or PCA to show intermediate operations seems pertinent, though I don't work with matrices at that level often

APL is great because it's concrete when you want it to be -- like Josh Horowitz's PANE, you can thread concrete data through (an identity matrix?) and see what happens

the aesthetic motivation for all this ^ is performative matrices, i want to play the music of the matrices

a la @Jonathan Skjøtt's https://twitter.com/jskjott/status/1172703158130348032

also some of max bittkers stuff

@Garth Goldwater enjoy my clownery^

oh also the little symbols need to float around on a big ass projector as you "play" them

currently trying to find a toki pona fanart i vibed with

especially if you nailed the “do the operation to the thing you’ve selected” interface

some sorta homestuck reference

I wonder if there are researchers' APL "sessions" / "notebooks" in their exploratory form available on the internet