Easy to find examples, here one that gained notoriety ad some kindergartens were sued: https://www.bestlawyers.com/article/can-i-sing-happy-birthday-in-public/

Easy to find examples, here one that gained notoriety ad some kindergartens were sued: https://www.bestlawyers.com/article/can-i-sing-happy-birthday-in-public/1974 https://www.bestlawyers.com/article/can-i-sing-happy-birthda...