"Happy Birthday to You" is a popular birthday song that is often sung to celebrate someone's special day. The song's origins date back to the late 19th century, and it was originally written as "Good Morning to All" by Patty Hill and her sister Mildred J. Hill. Over time, the lyrics were adapted to create the birthday version we know today. The song is typically sung before cutting the birthday cake, and it is recognized in many cultures around the world. Its simple melody and cheerful lyrics make it easy for people of all ages to join in and celebrate the birthday person, creating a joyful atmosphere during the festivities.