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.
(November 2013).  What a Wonderful World  is a song written by Bob Thiele (as George Douglas) and George David Weiss. It was first recorded by Louis Armstrong and released in 1967 as a single, which topped the pop charts in the United Kingdom. Thiele and Weiss were both prominent in the music world (Thiele as a producer and Weiss as a composer/performer). Armstrong's recording was inducted in the Grammy Hall of Fame in 1999. The publishing for this song is controlled by Memory Lane Music Group, Carlin Music Corp. and BMG Rights Management.