You Are Free to Sing “Happy Birthday”
The song we know as “Happy Birthday to You” has been around since the 19th century, with various lyrics. The version we know was first published in 1911, and was copyrighted in 1935. Warner/Chappell Mus...
https://www.neatorama.com/2015/09/22/You-Are-Free-to-Sing-Happy-Birthday/