I'm also doing a tracker, but I opted to do a complex synthesis model(samples, ring-modulation, LFSR noise, table-based parameter programming) - I think I started almost the same time as the guy I linked to, but I've exposed almost nothing to the UI yet so a lot of the fun stuff is still buried in test code.
My goal is to get it to a stage where I can put together a demo track and, then try to fund a more polished version through Kickstarter. I haven't thought about license yet but I suppose something open-source would be appropriate(so that the sound engine can be integrated in games etc.).
edit: Also, it uses Canvas and the performance has varied widely in FF4 builds. Current Minefield seems like the best option.
seems cool! I am excited that more people are getting into this stuff.
Sorry mine is so limited from a synthesis perspective, I would really like to add more controls as well. I was getting a bit bogged down in all of the UI stuff.
My first reaction when I found out about yours was "fuck, beaten" but given the ambitious direction I took, that's no surprise. :) I've had thoughts about my ideal tracker/sequencer stewing for probably well over a year...the beta builds of FF4 just induced me into laying all of them out and seeing how I can make them work.
It's good to see that we're thinking along similar lines...I'd like to see lots of JS music apps.