[jek0]

Great job putting all this together! Brings back memories.

Out of curiosity I downloaded a .mid file to compare it with my local timidity install. The quality of the later is way better (I installed it from brew)... It sounds like it either use a better SoundFont or midi effects (like reverb) are not working properly on the site?

Is it just me? Not complaining, just mentioning it.

[feross]

You're right. Reverb sounds way better with the version of timidity available on Homebrew. I noticed that brew is installing TiMidity++ (http://timidity.sourceforge.net/) instead of libTiMidity (http://libtimidity.sourceforge.net/) which is what I ported to WebAssembly. I'll look into the differences between the two, but if anyone knows more please share.