Veteran Disney composer Alan Menken and Hamilton star Lin-Manuel Miranda will be collaborating on new music for The Little Mermaid film. Menken made the announcement at the D23 Expo. The movie is to re-imagine the studio's 1989 animated classic. For the live-action Little Mermaid, I'm writing additional songs with lyrics by 'Hamilton' and 'Moana' songwriter Lin-Manuel Miranda, he said. Miranda first boarded The Little Mermaid a year ago, but details about his creative involvement were not revealed.