My apology for trying to keep the title short.
When you release a key but hold the sustain pedal, the key will keep glowing.
I was experimenting with your rendition of Chasse-Neige when I discovered this.
I dunno if it will do the same after rendering, but the preview just looks unnatural to me...
Warning: Wall of image approaching
I deleted all particles and sabers to make it more obvious.
Turning off “Sustain Hold” in Keyboard Settings will fix this.
Ok, thanks for answering. Fixed. Thanks!
P.S. Your rendition is my favourite!