Alan Menken tells the stories behind songs from ‘Little Mermaid,’ ‘Aladdin,’ and more Disney classics

If you’ve ever loved a Disney song, chances are 65-year-old Alan Menken wrote it. With Oscars, Grammys, and Tonys to his name, he’s now set his sights on TV with ABC’s medieval musical comedy Galavant (which concludes Sunday at 8 p.m. on ABC).