Shelton, 40, sported his signature getup in a black button-down T-shirt with jeans and a cap.
The couple already released the song “Go Ahead and Break My Heart” in 2016 on Shelton’s album If I’m Honest.
Shelton opened up to ET
back in May 2016 about co-writing the tune with his pop rocker girlfriend.
MORE: Gwen Stefani Wears Shoes With Blake Shelton's Face on Them -- See the Pic!
"I started this song and wrote about half of it and sent it to her and she wrote the other half of it. It was just kind of something for she and I to help us feel better about what we were going through," the country singer told ET at the time.
"When I originally started writing this song… I was only trying to impress Gwen."
For more from the couple, watch the clip below!