“It’s this idea that [Lin-Manuel Miranda] had that King George would sing the equivalent of kind of a break-up song. … I had no real rehearsal. I rehearsed for about a day, and then went into the show. And so when I went into the show, I had no British accent. … It was like I was doing the high school play. I just had no sense of character. I just came out in the costume and sang the song and walked offstage.
And through the course of the first month it was kind of like a rehearsal process in front of the audience, which was really awesome and really interesting. But it was a testament to the material that even without any sort of sense of what I was doing in those initial weeks, you could come out there and the song just kills, because the song is so great.”
(via)