Kacey Musgraves was country's queen of the 2019 Grammy Awards, and her bewildered reaction to winning Album of the Year was pure and priceless.

Musgraves was seated next to husband Ruston Kelly when her album Golden Hour was declared the winner of the night's biggest honor. Watch above — when she hears her name called, she's is genuinely shocked. She can't stop saying "what" as Kelly covers his face in disbelief before melting into a smile. The "Butterflies" singer then kisses her husband and realizes she has to make her way to the stage to accept the award, repeatedly mouthing "what" and "oh my God" while walking through the crowd, which is giving her a standing ovation.

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The "Rainbow" singer's win was significant, as it marked the first time in a decade that a country artist has been awarded the monumental prize that filters in the best albums in all genres of music. In her acceptance speech, Musgraves thanked her husband, management and creative teams and acknowledged the impact of music.

"I would have nothing without songs to me. It's just all about the songs," she said appreciatively.

Album of the Year capped off a four-win streak for the star, who won in every category for which she was nominated at the 2019 Grammys. Musgraves ultimately walked away with Best Country Album, Best Country Song for "Space Cowboy" and Best Country Solo Performance for "Butterflies." She also performed her new single during the awards show, the encouraging piano ballad "Rainbow," and participated in a tribute to Dolly Parton singing "Here You Come Again" with Katy Perry and an all-star singalong to Parton's genre-defying hit "9 to 5."

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