I actually spent an hour with it without pause, so in terms of comparing this to highly successful cutting edge AI announcements with playgrounds, I'm digging THIS a lot more today.

Also the sound is very high quality. Having built various A440 piano synths from scratch, the fidelity of the sound is superb. One thing I noticed was that the sound buffer has a memory issue at some point (after about 40 minutes of continuous practice) that causes the sound to start crackling. Maybe something to do with memory storage or something isn't getting flushed when the channel goes idle (no sound playing). Will fiddle. Nice work!