This is nice, I'm similarly a fan of Teenage engineering and have been playing around with ToneJS and Sveltekit to make https://shantylab.com

It's been a really interesting way to understand the elements of putting together music for me. I started off thinking surely it can't be that hard to make a simple way of making music but as I added more and more functionality I found it tricky to keep the UI simple. I'm still plugging away and the challenge of chasing simplicity is what's keeping me going.