22q11.2 deletion syndrome is caused by the deletion of a small section of chromosome 22. It results in a cleft palate, heart defects, autoimmune disorders, and more. The symptoms vary wildly and can be accompanied by learning disabilities and mental illness. Cystic fibrosis is caused by a point deletion.
The melody of Happy Birthday to You comes from the song  Good Morning to All , which has been attributed to American siblings Patty Hill and Mildred J. Hill in 1893, although the claim that the sisters composed the tune is disputed.
So apparently, Warner Music owns the rights to the âHappy Birthdayâ song. Though some are challenging that in court. I never really thought of Happy Birthday as an actual song, but apparently it is. And in the same way you canât sing someone elseâs song in a public production, you canât do it with âHappy Birthdayâ either. That means that movies that include the Happy Birthday song have to pay royalties. Snopes confirms it.