Warner loses his “Happy Birthday” song

Warner/Chappell's Claim to Happy Birthday Challenged

The Strange Story Behind the “Happy Birthday” Song, by Daniel Ganninger, Knowledge Stew

Happy Birthday song: Who can use it and why it's in court - BBC News

Happy Birthday Wishes, Openers ft. birthday card & birthday intro

Pitt library songbook key to lawsuit over 'Happy Birthday' rights

11,600+ Happy Birthday Writing Stock Illustrations, Royalty-Free

With 'Ragnarök,' 'God of War' Keeps Growing Up, god of war

Who Owns the Rights to the “Happy Birthday” Song?