I just downloaded C2 a few days ago to see if I could use it to replace my flash driven virtual instruments.
Last night, I've started on a HTML5 Piano and now I am happy to say that it works well on the desktop.
Firefox has a little bit of lag but it disappears once each key has been played once.
Chrome = 100% (VERY happy with the result).
On my iPad (first generation) it does not play well because of 2 seconds delay.
On my Samsung Note 3 it plays better but the lag is noticeable.
I assume that if I compile that into a real app (export), that will change? Will see.
This is exciting and I am very optimistic that before too long, I will be able to offer Flash as an alternative.
I don't think that I have enough points to post a link or image but once I do, I will invite you guys to test a little more.
Ciao for now,
P.S. iPhone 5 works well but the two last keys (to the right) don't make a sound? Weird.