Natalie Hemby’s lyrical depth and dynamic songcraft have made her one of the premier sculptors of modern country. She expanded the genre toward psych pop with Kacey Musgraves’ Golden Hour, co-writing the dreamy “Butterflies” and comforting “Rainbow”, and was instrumental in Lady Gaga’s A Star Is Born crossover with the soaring “Always Remember Us This Way”. But Jon Pardi’s “Heartache Medication” shows her deeply traditional roots.