Warning: Some posts on this platform may contain adult material intended for mature audiences only. Viewer discretion is advised. By clicking ‘Continue’, you confirm that you are 18 years or older and consent to viewing explicit content.
The music and lyrics are in the public domain in the European Union and the United States. The copyright expired in the European Union on January 1, 2017. A U.S. federal court ruled in 2016 that Warner and Chappell’s copyright claim was invalid and there was no other claim to copyright.
Except it is not copyrighted anynore
From Wikipedia https://en.wikipedia.org/wiki/Happy_Birthday_to_You