When Did The Tradition of The Happy Birthday Song Begin?

Birthday Song across the world and their variations

The History of “Happy Birthday” and Its Copyright

Happy Birthday to You: Multiple Voicings Choral Octavo - Digital Sheet Music Download

History of the Happy Birthday Song

Swedish 'Happy Birthday' Song Lyrics & Birthday Tradition - 'Ja må han/hon leva' - Hej Sweden

Spanish way of life: Why can't Spanish people sing the tune to 'Happy Birthday'?, Life in Spain

Happy Birthday' to whom? A simple song with a complex copyright history and lawsuit - Los Angeles Times

Happy Birthday to You - The Good and the Beautiful

Learn How to Sing Happy Birthday in German

The Confusing History of “Happy Birthday”, by Paulo Camacho, All Things Picardy

The Hill Sisters and the 'Happy Birthday Song': How Copyright Laws Shaped the Song's History - Song Origin

History of the Happy Birthday Song

Happy birthday - The_Art_of_Hong_Kongese