Harry Styles Surprises Kacey Musgraves Crowd In Nashville: Full Song

Kacey Musgraves fans were already amped up for the final show of her Golden Hour tour at Bridgestone Arena Friday night. Then they erupted when Harry Styles joined her on stage for "Space Cowboy".

Although he's British, he yelled "yee-haw!"

He told the Nashville crowd, “She’s made a couple of my favorite albums, and it’s an honor to be here tonight with all of you to say congratulations and round off this wonderful tour, and a wonderful year.” So this begs the question, which of her three albums doesn't he like?