I’ve been thinking about trying this. You can only have 48 Parameter locks throughout your 12 scenes… If you are using all 12 sounds in a song and the first scene only has one sound playing. That is 11 locks right there, just to turn off the other tracks. Add another scene with another sound, thats another 10 locks. By my math you can get around 6 scenes like this. If you are also making other scenes or locking more stuff in each scene that will eat your locks up even faster. I’m wondering if you have used up all your locks and this is causing your problem?