Mildred and Patty Hill. Names not many will know, however, they were the co-composers of a song that the vast majority of people will know.

Originally titled 'Good Morning To All,' it was published ninety years ago in a songbook next to an alternative version in 1924.

Prior to this, American primary schools had been singing the tune for nearly thirty years, where the word 'birthday' had started to be phased in, in 1911.

After being played on the radio, and in the Broadway musical 'The Band Wagon', and in Western Unions first ever 'singing telegram' Jessica, the third Hill sister secured the

copyright for the song now titled 'Happy Birthday To You' after it appeared in the public domain more often.

A year later, the first version of the copyrighted song was produced by Clayton F.

Summy Company. The patent was forcible if it was sung for profit until 1991. This date was extended under current law until 2030. After a series of acquisitions in 1983 Warner

Music became the owners of the song and earned a reported $2 million in royalties per year. Both Walt Disney and the makers of the documentary 'No Subtitles Necessary: Laszlo

& Vilmos' had to pay $5,000 to play the song in their respective properties.

A foundation named' The Hill Foundation'- was set up.

Half of the royalties from the royalties went to 'The Hill Foundation' since 1993, with some going to their nephew Archibald.

Robert Brauneis put the best case forward for the long argument of wether the sung was public domain or not.

In a 2010 paper, 'Copyright and the World’s Most Popular Song, using more than 200 documents from 6 historical archives spanning all of America to put the Hills' ownership into question, showing that the writer of the lyrics had never been recorded.