What a cool project! I love how the organizers think and want to bring young musicians together, create an orchestra without borders. It's a fantastic way of trying to create bonds and bring music to the masses (well, to the few that are interested).
Huge congrats to your son and to you too as I know what it makes. I'm sure this is just the beginning, the door to greater things.
Orchestra without borders - seems like a better name they could give to the project, as it is true. My son doesn't speak German but seems they understood each other haha, ok, the youngsters speak English so it was not a huge problem. And he was coming home from the rehearsals with a smile and repeating the words he learned hahaha. But on the musical side what they picked up is even more important!
Thank you, @erikah, I needed time to assimilate all this excitement and yes, maybe now some other decisions and attitudes will be modified (to better, hopefully 😉 )