The song took off, but as it made its way to popular culture like films and Broadway musicals, the Hills took legal action and registered a copyright for "Happy Birthday to You" in 1935.

10. The Happy Birthday Song is arguably the most frequently-sung English song in the world,giving“For He’s a Jolly Good Fellow” and “Auld Lang Syne” a run for their money. If you hear ...

"So glad we could celebrate you today," Moore captioned ... his wife Emma Heming Willis and his kids — singing a hearty rendition of "Happy Birthday" and offering up a dessert with candles.

Time to break out the cake, sing happy birthday and write some thoughtful words in a card. Because no matter how young or old you are, birthdays are always an occasion to celebrate. Birthdays are ...