Keith Urban proved he’s a man of many talents on Tuesday night’s (Sept. 24) Tonight Show, when host Jimmy Fallon asked him to do an impromptu cover of any pop song that came to mind. After recalling how he got a ukulele as a kid from his parents before switching to guitar at 6, Urban recounted his youthful talent show adventures — including a very embarrassing picture of one of his award-winning performances — as well as a short teenage stint in the metal band Fractured Mirror. Given his eclectic musical background and his penchant for reimagining chart-topping hits during shows, Fallon questioned how Urban chooses which pop songs to cover during his concerts.

“Just [a] well-written song,” Urban said of how he chose his live takes on songs by Taylor Swift and Ariana Grande. “Taylor songs are well-written, the bones are good, they’re well written, so you can do them in any form. You can do any well-written song in almost any style,” he added. When Fallon asked if any song was stuck in Urban’d head that moment, the singer suggested Sabrina Carpenter’s summer smash “Espresso,” but do it on banjo.

So, of course, despite seemingly not having tried that combo before, Fallon surprised Urban by pulling a beautiful six-string banjo out from behind his desk, which Urban proceeded to expertly pick as he sang the song’s indelible chorus while the studio audience clapped along in time.

Urban also had a chuckle with Fallon over a prank they pulled on the singer’s wife, actress Nicole Kidman, at the Met Gala in May.

“I was sitting next to Nic, and she had her hand on mine, and she was talking to somebody,” Urban explained. “And Jimmy came over and talked to me, and I say, ‘Jump in the seat, Jimmy, and just, like, slide your hand in under mine, so she’s holding your hand. She won’t know.’” So Fallon — who will never forget that time Kidman revealed in 2015 that she used to have a crush on him and that he missed his shot at a date with her — slid into Urban’s spot for the switcheroo that totally caught The Perfect Couple star off her game.

“So Jimmy slides in, so Nic’s got his hand like this,” Urban said as the host put his hand over the singer’s hand. “This is Nic and him.” Urban then described walking around to the other side of the table and waving at his surprised wife. “And she was like, ‘What’s going on?!’” Fallon said in his best shocked Kidman voice. “She’s like ‘What?! Jimmy, don’t do that!’”

During the chat, Urban also talked about his new record, High, and said he made a completely different LP called 615 that he had ready to go last year before scrapping it entirely because it didn’t feel quite right before returning later in the show to play the High single “Chuck Taylors.”

Watch Urban on the Tonight Show below.