13. Kacey Musgraves, Same Trailer, Different Park
In the last two decades, country has moved into the mainstream step by step, with help from Garth Brooks, LeAnn Rimes, Shania Twain, and Taylor Swift. These artists helped open the door; Musgraves burst through it with Same Trailer, Different Park, which caused a slow-growing sensation and resulted in a best new artist Grammy nomination. The tolerance-preaching "Follow Your Arrow" nabbed the headlines, but the album is a cohesive unit, carefully constructed, immaculately produced, and gorgeously sung.