"Happy Birthay 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 Guinness Book of World Records, "Happy Birthday to You" is the most popular song in the English language, followed by "For He's a Jolly Good Fellow" and "Auld Lang Syne". The song has been translated into at least 18 languages, though it is often sung with the English lyrics even in countries where English is not a primary language.