1. "Love Is an Open Door" from Frozen marks the first time a princess sang a duet with the villain.
2. After winning the Oscar for Best Original Song for "Let It Go," from Frozen, Robert Lopez became the 12th person to ever EGOT (which means to have won an Emmy, Grammy, Oscar, and Tony).
3. Beauty and the Beast was originally not intended to be a musical.
4. "When You Wish Upon a Star," from Pinocchio, was the first Disney song to win the Academy Award for Best Original Song.
5. Through his work with Disney, Alan Menken — who has composed the music for The Little Mermaid, Beauty and the Beast, Aladdin, Pocahontas, and Tangled — has won eight Oscars.
6. "Can You Feel the Love Tonight" was almost cut from The Lion King because it did not fit the film's father-and-son theme.
7. The melody for Peter Pan's beloved classic song "The Second Star to the Right" was originally written for Alice in Wonderland.
8. Snow White and the Seven Dwarfs was the was the first movie in film history to ever release a motion picture soundtrack.
9. Mary Costa's first paid job as a singer was as the voice of Princess Aurora in Sleeping Beauty -- she would go on to become an internationally well-known opera singer.
Costa, then unknown, recorded her vocals in 1952, and by the time of the film's release in 1959, she was already singing opera professionally.