> The Happy Birthday song got invalidated by an older work of "Good Morning to All" [1]. That's an incorrect rendition of the underlying facts. Happy Birthday

> The Happy Birthday song got invalidated by an older work of "Good Morning to All" [1]. That's an incorrect rendition of the underlying facts. Happy Birthday was based on the tune of Good Morning to All, and this history was well known even when Warner was on a warpath demanding licensing fees for singing it. The invalidation instead arises from the fact that available evidence indicates that the words to Happy Birthday were not written by the Hill sisters and thus the song was never properly copyrighted.