These kids are singing John Rutter arrangements of “Lo, how a rose E’re blooming”, not a 6 hour Wagner opera.
It’s not exhausting. I did choir as well as a smaller chamber choir, complete with basic suburban jazz hand box step spirit finger choreo, and didn’t break a sweat once.
"I'm an American, Damnit!!! And if it's three things I don't believe in, it's quitting and math."