Almost certainly 'yaxu who has a bunch of videos on YouTube re: TidalCycles (the live coding env he created in Haskell) - https://www.youtube.com/@yaxu/videos
There's a web based version called Strudel that's a good way to get a quick intro without the hassle of the TidalCycles setup - https://strudel.tidalcycles.org/
Also does a lot on the Euler Room channel including a live stream this last weekend - https://www.youtube.com/@Eulerroom/videos
There's a web based version called Strudel that's a good way to get a quick intro without the hassle of the TidalCycles setup - https://strudel.tidalcycles.org/