“Happy Birthday” may be the Hill sisters' main claim to fame, but Patty (left) and Mildred's (right) impact on American history extends far beyond the beloved song. Illustration by Meilan Solly / ...

Every 5-year-old knows it. It is the most frequently sung song in the English language, according to the Guinness Book of World Records, surpassing the works of Bach, Beethoven and the Beatles, says ...

Happy birthday to you! Everyone knows the traditional birthday song. But did you know that there are countless other songs about birthdays that are reflective and fun for celebrating your big day?

In the United States, “Happy Birthday to You”—one of the most popular songs in the world—is still under copyright. And it will be until 2030. While you’re free to sing the song in private, you need to ...