Justin Timberlake Provided Vocals on Little Big Town's New Song 'C'mon'

Looks like Justin Timberlake is getting back to his Tennessee roots!

The 35-year-old is continuing to diversify his music repertoire, recording vocals for Little Big Town and Pharrell Williams‘s new song “C’mon.”

The “Happy” singer spilled the beans of the new collaboration to ET while on the red carpet at the 2016 CMT Music Awards.

“We were in the same studio at the same time, so we had Justin in one room [and] Little Big Town in another room,” Williams, 43, said. “Quite naturally, people are going to visit each other and Justin ended up singing … background [vocals] on ‘C’mon.'”

The song, which Little Big Town and Williams performed on Wednesday’s show, is a doo-wop-influenced jam with Williams’ signature unique back beat.

Little Big Town’s Karen Fairchild said the collaboration was Timberlake’s idea.

“It was like the old days when artists used to hang out in the studio and you might hop in and listen to somebody’s song,” the 46-year-old singer said. “He came down and listened to what we were doing. He was like, ‘Oh my gosh, what if I sang this?’ It was very fun.”

Timberlake shared a photo of their recording session – which Little Big Town guitarist Phillip Sweet called “a Southern party” – back in March, saying “NBD … Just writing with @littlebigtown.”

“This band is the truth,” Timberlake continued. “So good!!!”

This isn’t the first time Timberlake and Williams have worked together. The duo did a song called “Brand New” on Williams’ latest album, “Girl.” Williams also produced “Señorita” and “Like I Love You” – Timberlake’s singles off of his first album, Justified.

The two are said to be collaborating on new music for Timberlake’s upcoming album.

“Obviously they [Timberlake and Pharrell] have a deep friendship for many years,” Fairchild said. “So it was really cool.”

Timberlake’s new song “Can’t Stop the Feeling” – co-produced by hitmakers Max Martin and Shellback – is the first single off the soundtrack for the DreamWorks Animations’ Trolls movie, due Nov. 4. Timberlake served as executive music producer on the album, and voices a character in the film.

Williams produced eight tracks off of the country group‘s new album Wanderlust, out Friday.

“[The album] is the result of an incredible friendship and chemistry we have with Pharrell Williams,” Fairchild said in a press release. “What started out as one writing session a few months ago turned into multiple writing sessions, as well as back-and-forth trips from Nashville to Los Angeles. When the songs started coming together, we realized it was too special to not share with our fans. Pharrell loves country music and is a huge fan of harmony. That shared passion and appreciation took us on a creative journey we had no idea would happen.”