The 35-year-old Promising Young Woman actress hosted the NBC sketch comedy series for the first time on Saturday (April 10) from New York City.
Carey then shared how excited she is to be in NYC, while sharing that the 34-year-old Mumford & Sons musician is back home with the kids.
At that time, Marcus pops up from the audience, confusing Carey.
“What a surprise, lovely to see you — where are the kids?” Carey asks.
““I left them with the Sons! I couldn’t miss this! You’re going to smash it! SNL!” Marcus exclaimed. “Do you know if they booked a musical guest for tonight?”
“Yes. Quite sure,” Carey said, but Marcus had already pulled out his guitar.
“I think we’ve got it covered…thank you, darling,” Carey said, but Marcus had already started playing.
Marcus then said that he thought Carey was giving him a “signal” — “our secret couple signal for please play the guitar?”
“We are not that couple!” Carey said. “Do you remember the bit at the end of the monologue where we say we the show is going to be great — do you want to play the guitar for that bit?”
Marcus then ran up and joined Carey on stage, where he played the guitar while Carey said her bit before the show cut to commercial.
If you missed it, Carey recently revealed the strange thing she plans on bringing to the 2021 Oscars with her!
Carey Mulligan Monologue!
(with Marcus Mumford!) pic.twitter.com/y6fWlxBPZj
— Saturday Night Live – SNL (@nbcsnl) April 11, 2021