Happy birthday song- Feliz cumpleaños salsa music . Feliz cumpleaños para la persona especial que tu eres. "Happy Birthday to You", also known more simply as "Happy Birthday", is a traditional song that is sung to celebrate the anniversary of a person's birth. According to the 1998 Guinness Book of World Records, "Happy Birthday to You" is the most well recognized 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.