Theres also all the dancing and singing rehearsals that go into mounting a major live-action Disney musical.
Luckily for Miranda, however, hes got an advantage: Meryl Streep.
I asked Meryl Streep, whos in the film, what her favorite British accent is, Miranda explained.

Credit: Bryan Bedder/Getty Images for The Christopher & Dana Reeve Foundation; Danny Martindale/WireImage
She said [Margaret] Thatcher.
Thatcher was a self-created persona.
[Thatcher] took elocution lessons, and made up her own accent.
I did it with full humility, knowing my best accent wouldnt touch [Streeps] work.
The East End accent now is very different from in the 30s.
Youll see that mistake on both sides a lot.
Itll hit theaters on Dec. 25, 2018.