The answer is “no”. Though the word is delivered with a warm laugh, it is immediately repeated for emphasis. “No,” Maren Morris insists again, she has still not managed to process the fact that earlier in the month she joined Miley Cyrus onstage at the Grammys to perform a live tribute to one of her foremost songwriting heroes: Dolly Parton. With Dolly Parton. The emotional hangover is real.

“I’ve gotten to perform with people I love, and for people I ...