Jimmy Fallon and James Corden delivered an impromptu performance at one of New York City’s most exclusive venues, captivating onlookers with their musical talents.

The pair, who dined with “Saturday Night Live” creator Lorne Michaels at the renowned Emilio’s Ballato, surprised guests by taking the stage in the venue’s hidden bar area, according to an insider speaking to Page Six.

In the intimate and elegant setting, The Eric Newman Jazz Band was entertaining the crowd when Fallon and Corden joined in, serenading the audience with classic songs by Frank Sinatra and Tony Bennett.

James Corden, 47, currently lighting up Broadway in “Art” alongside Bobby Cannavale and Neil Patrick Harris, delivered a powerful rendition of “My Way.” Following him, Jimmy Fallon, 51, charmed the room with a soulful performance of “I Left My Heart in San Francisco.”

Fallon, host of “The Tonight Show,” is no stranger to belting out Tony Bennett hits, and once again, he did not disappoint.

He suavely sang the same tune in a surprise appearance on “The Voice” in 2023 after appearing in the audience wearing a fake beard and sunglasses.

The rendition got coach John Legend to exclaim at the time, “I’m getting emotional!”

(Bennett passed away in 2023 at the age of 96.)

Corden has previously been known to perform Sinatra songs as well. In 2017 he reworked a version of “L.O.V.E.” by the Chairman of the Board to protest the transgender military ban.

The “Peter Rabbit” star also previously did a duet with Stephen Colbert on the air in 2015 to sing Sinatra’s “Me and My Shadow.”

Other famous folks who’ve partied in the revered restaurant’s private back room in the past include Rihanna, Brad Pitt and Leonardo DiCaprio.

Taylor Swift famously had a girls’ night out there with Blake Lively, Brittany Mahomes and Sophie Turner after the “Game of Thrones” star separated from Joe Jonas. (But Jonas is also close friends with the family who owns the eatery, and once dubbed Emilio’s Ballato one of his favorite restaurants in New York.)