Oh, Carnegie Hall for a high school choir - how awesome! My sister has been in choirs since grade school and her current community choir will be singing 'Lux Arumque' soon. Her choir saw the video of that piece, but she was really excited to see the other videos, too.
As a video geek, and a music geek, I am totally blown away by this. I've been a fan of Playing for Change for a while because I find the idea of people creating music from their own corner of the world and bring it altogether fascinating, but this is absolutely amazing. Thank very much for posting this Jocelyn.
Location: Carnation, WA (Western Washington State / Cascadia / Pacific NW)
Graham, if you enjoy Playing for Change, the movie "1 Giant Leap" also had some amazing music created using a base rhythm and adding in musicians from around the world. The only difference being that it focused on combining indigenous or traditional music together. Overall, the movie was not for me, but I thought the music was wonderful and fascinating.