Jimmy Fallon Makes Up for Brief Mumford & Sons Intro at 'SNL 50' After Marcus Mumford Calls Him Out for Snub — Watch!

Jimmy Fallon certainly got back on Mumford & Sons' good side.

On the Wednesday, March 26 episode of The Tonight Show Starring Jimmy Fallon, the comedian/host, 50, made up for his brief introduction of the folk-rock group at the SNL 50 anniversary concert with a hilariously long breakdown before their performance on his show.

Ahead of their set, bandleader Marcus Mumford sat down with Fallon for an interview and playfully chided him for his short intro at the anniversary event.

"We've known each other for a very long time," the "Little Lion Man" hitmaker, 38, said of Fallon. "We've been on your show a lot of times." 

Because of that, Mumford thought he'd get a lengthy speech before his band took the stage.

"I was excited," he said. "Ah, Jimmy's gonna introduce us, this is really sweet! He'll probably go into our history, he'll talk about how many times we played SNL, or how we're like the only British artist playing that night."

A video of Fallon's brief monologue of six words then played: "Ladies and gentlemen, Mumford & Sons!"

Mumford wasn't too pleased.

"What the hell, bro!" he said. "There were so many things you could have said! And, what's worse, that was teleprompted! They have the best script writers in the world, and that's what — they're paying these guys to write something. He's a very funny man, he could write something himself if he could be bothered. Nothing."

Fallon laid the blame on SNL boss Lorne Michaels.

"I remember we were rehearsing, and I had a whole big thing, like, 'Oh, bla bla bla, we love 'em.' And Lorne was there, and Lorne goes, 'We just don't do those intros,'" he said.

However, Mumford disagreed.

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"You totally did them for other artists!" he said. "You were wagging on about Gaga!"

After their chat, Fallon made up for his snub by giving a hilariously lengthy speech before Mumford & Sons' Tonight Show performance, explaining the history of the band and praising each band member individually. 

In addition to Mumford & Sons, the NBC sketch series' anniversary show also featured performances from Miley Cyrus, Post Malone, Jelly Roll, Backstreet Boys, Arcade Fire, Bonnie Raitt, Brandi Carlile, Brittany Howard, Chris Martin, David Byrne, DEVO, Eddie Vedder, Jack White, Preservation Hall Jazz Band, Robyn, The B-52s and The Roots.

Mumford & Sons' fifth studio album Rushmere is out Friday, March 28.