Chris Willman Music WriterThe irreverent wit of Kacey Musgraves’ first two albums has long since given way on the last couple to an earnestness and, most of all, a gravitas about love — falling into it, on her last release, 2018’s Grammy-winning “Golden Hour,” and falling back out, in a big way, on the just-released “Star-Crossed.” She does allow herself one good laugh, though… not in the new record’s lyrics, but in its attendant merch.