He will never miss another note. He will simply disappear, much like the boy that bounced his ball into the yard next to his while all the other children bounced their balls correctly.
^^^ THIS I totally used my sperg powers to analyze this video and between about 1:45 and 2:05 it's pretty clear that 1) the audio isn't actually coming from the kids' instruments 2) the video is actually a bunch of shorter segments which were carefully spliced together.
You too can adopt these kids if you are willing to strike fast with overwhelming military force before they are culled to free up resources for the counterattack which wont come, but will make you sad nonetheless!