Blake Shelton and Gwen Stefani’s duet, “Nobody But You,” ascended to No. 1 on the Billboard Country Airplay chart this week. The single is Blake’s 27th No. 1 hit on the country chart, while Gwen notched her first No. 1 on the country chart after more than 25 years as a star—both as a solo artist and fronting No Doubt—on the pop charts.

Penned by Ross Copperman, Shane McAnally, Josh Osborne and Tommy Lee James, “Nobody But You” is one of four new tracks on Blake’s 2019 album, Fully Loaded: God’s Country.

“When I heard it, I was just floored,” says Blake. “I realized how important that song was for me and where I am in my life right now. I just think it’s magical. I literally think it’s important of a song as I’ve ever recorded.”