Much of your two-year romance with Blake Shelton has unfolded on TV. What was it like filming your joint ­rendition of “You Make It Feel Like Christmas”? 

It was for sure one of my favorite moments, and hopefully we were able to capture that. There were probably 2,000 people, all friends and family, in the theater, and it was a really electric audience. Looking at Blake and singing this song that we’d written ­together—which feels like such an extension of both of us—was so special.