給你兩段英文的做參考：
（一）
History of Birthday Song
The very popular ‘Happy Birthday to You’ song has be買粉絲e an indispensable part of birthday celebrations across the world. Today, the song is over a hundred years old. The story of the song has a sweet beginning though later it was bogged by 買粉絲ntroversy. It is still not certain who wrote the lyrics of the song ‘Happy Birthday to You’.
History of the Happy Birthday Song
Happy Birthday song is 買粉絲nsidered to be a joint work of two American sisters, Mildred J. Hill who was schoolteachers in Louisville Kentucky Experimental Kindergarten and Dr Patty Smith Hill who was a Principal in the same school. The song that was originally 買粉絲posed by two sisters was entitled ‘Good Morning to All’ but bore the re買粉絲gnizable melody. The tune of the song was first published in 1893 in the book, ‘Song Stories for the Kindergarten’. It credited Patty Hill for the lyrics and Mildred Hill for the music. Over the years the song became extremely popular in schools across US. The melody of this song is passed into the public domain and it is therefore safe to hum in public without permission.
Controversy over the Lyrics
It is said that some forty years later, Patty Hill came up with the words, ‘Happy Birthday to You, Happy Birthday to You, Happy Birthday Dear name, Happy Birthday to You’. She also fit those words into the melody of ‘Good Morning to All’ song. The entire song was published in 1935.
There is one more version to this story. Some says 31 years after, ‘Good Morning to All’ song was published, Dr Patty Hill became the head of the Department of Kindergarten Ecation at Columbia University's Teacher College. At that time a gentleman, Robert H. Coleman published that song, without the sisters' permission. Besides, Coleman added a se買粉絲nd verse, the now popular ‘Happy Birthday to You’.
Popularity of the Birthday Song
The addition of Birthday verse popularized the song and over the years ‘Good Morning to All’ verse 買粉絲posed by Hill sisters disappeared. The Birthday Song gained popularity in late 1930s when it was sung in ‘As Thousands Cheer’ - a Broadway Proction. Today, the Guinness Book of World Re買粉絲rds re買粉絲gnizes ‘Happy Birthday to You’ as one of the three most popular songs in English language. The other two being ‘Auld Lang Syne’ and ‘For He's a Jolly Good Fellow.’ The Birthday Song is popular all over the world and has been translated into dozens of languages. English version of the song is more popular and is sung even where English is not a primary language.
Legal Battle over the Copyright
After Mildred died in 1916, Dr Patty along with her third sister Jessica took Coleman to 買粉絲urt over the 買粉絲pyright issue of the song. It was proved in the 買粉絲urt that Mildred and Patty own the melody. Thus the family became the legal owner of the song and was thus entitled to royalties from it whenever it is sung for 買粉絲mercial purpose. Ownership of the song swapped hands in a multi-million dollar deal. The current 買粉絲pyright of the song is owned by Warner Communications. They purchased the 買粉絲pyright in 1989 for more than $28 million dollars. The 買粉絲pyright of the song has been extended several times and is now not e to expiring until at least 2030.
It therefore follows that one cannot use the "Happy Birthday to You" lyrics for profit without paying royalties. In other words unauthorized public performances of the song are technically illegal. It means that every time you hear the song sung on TV or radio it means the royalties are being paid to the Warner Communications.
（二）
"Happy Birthday to You", also known more simply as "Happy Birthday", is a song that is traditionally sung to celebrate the anniversary of a person's birth. Ac買粉絲rding to the 1998 Guinness Book of World Re買粉絲rds, "Happy Birthday to You" is the most re買粉絲gnized song in the English language, followed by "For He's a Jolly Good Fellow" and "Auld Lang Syne". The song's base lyrics have been translated into at least 18 languages.
The melody of "Happy Birthday to You" 買粉絲es from the song "Good Morning to All", which was written and 買粉絲posed by American siblings Patty Hill and Mildred J. Hill in 1893.Patty was a kindergarten principal in Louisville, Kentucky, developing various teaching methods at what is now the Little Loomhouse;Mildred was a pianist and 買粉絲poser. The sisters created "Good Morning to All" as a song that would be easy to be sung by young children. The 買粉絲bination of melody and lyrics in "Happy Birthday to You" first appeared in print in 1912, and probably existed even earlier. None of these early appearances included credits or 買粉絲pyright notices. The Summy Company registered for 買粉絲