Dan + Shay have won the award for Duo of the Year at the 2021 ACM Awards. Dan Smyers and Shay Mooney were on hand at the iconic Bluebird Cafe in Nashville during the ACM Awards ceremony on Sunday night (April 18) to receive the award, which actor Leslie Jordan presented after an introduction from Dolly Parton.

Dan + Shay beat out Brooks & Dunn, Brothers Osborne, Florida Georgia Line and Maddie & Tae for the honor. Smyers was effusive in his acceptance speech.

"This is absolutely incredible to be standing onstage here at the Bluebird," he began. "I remember visiting this place over 10 years ago, before I moved to Nashville with dreams of being a songwriter in this town.

"I'm still just as excited every day, getting to wake up and write country music," he gushed before thanking the ACM, the voters, the other acts in their category, their team and his wife, Abby.

"This is so special ... I wanna thank God for this guy," Mooney said of his duo partner. He went on to thank his wife and two sons, as well as country radio and the fans.

Dan + Shay's win came after a performance earlier in the night that set off the online rumor mill when it appeared that their mouths were out of sync with the audio track as they sang "Glad You Exist." It's not clear what portion of the 2021 ACM Awards was truly live and which parts were pre-recorded.

The 2021 ACM Awards air live on CBS and stream live on Paramount+. Sign up for the streaming service here.

2021 ACM Awards Show Photos:

The 2021 ACM Awards took place in Nashville on Sunday night (April 18). Luke Bryan was crowned Entertainer of the Year, while Thomas Rhett and Maren Morris were named Male and Female Artist of the Year, respectively.

The three-hour show was also packed with performances from Miranda Lambert, Luke Combs, Little Big Town and many more. Artists were at the Grand Ole Opry House, the Ryman Auditorium and the Bluebird Cafe, as well as on Lower Broadway, at the Station Inn and along the Nashville riverfront.

Keith Urban and Mickey Guyton co-hosted the show.

See Pictures From the 2021 ACM Awards Red Carpet:

The best dressed on the 2021 ACM Awards red carpet brought color — lots of color — for an awards show that promises to be a celebration. Photos show stars like Carly Pearce, Kelsea Ballerini, Chris Young, Kane Brown and more wearing the hottest and often most expensive designer outfits, or suits they designed themselves, in the case of Jimmie Allen.

Check out a full gallery of country music's hottest stars on the ACM Awards red carpet. Who do you think is best dressed and worst dressed?

The 2021 ACM Awards took place at the Bluebird Cafe, Grand Ole Opry and Ryman Auditorium in Nashville on Sunday (April 18).