Groff, who plays King George, and Miranda, who plays the show's title character, brought megaphones outside to perform for the crowd.
Before launching into their rehearsed rap, Groff said, "You ready? Am I ready?"
Read and watch the rap below!
Hi, my name is Lin Miranda
I know you don't know who I am
But I wore these pants, and I'm willin' to dance
Like an idiot, if ya just gimme the chance
To plug my show and reach the people
Bust my flow, cause the flow is lethal
It's called In the Heights, and the life is sweet, yo
It helps that I get to kiss Karen Oliv-oh!
Eight times a week, y'all, the beat's goin'
But we keep goin' cause we know
We're movin' and provin' to Michael Riedel:
We can have a hit show about Latino people!
Who wake up at my bodega
And sorry "Mr. Kenny Ortega",
You gotta tell Zac Efron that he gotta get off
Because he's never gonna look like Jonathan Groff
Woo, damn, he's so cute...
Heh! Okay, I'm sorry, but it's true
Don't look in his eyes, you'll get taken in
You'll be breakin' in to Spring Awakenin'
And that High School Musical's rakin' it in
It was paper-thin
But they made it again
And I'm facin' the end of this song the hard way
Is this what it takes just to make it to Broadway?