OK, so I tried what you said. I removed the line, and it seems a LOT more responsive! The only problem is that the mixer quickly gets overwhelmed and just dies for a few seconds. Maybe you can allow a maximum of three notes to be played at a time, and when a 4th note is played, just cut of the last one. But it is great to see that it already works! This really is leaps and bounds better than that first alpha release oh so long ago! keep up the great work.