I worked on the Emscripten / OF webMidi implementation, and made a patch.
First time I made the Emscripten / Pure Data stuff without ofxOfelia, but only with OF and ofxPd.
Its with the mscale and markov abstraction that is also from @ingox and @weightless.
Connect a midi keyboard to the website, create a markov chain and connect the website to a sound device (with midi).
Works not with Firefox and Safari, because they didnt implement webMidi...