It's no secret that Miranda Lambert is a huge Loretta Lynn fan, and she's one of several stars who participated in an upcoming documentary titled American Masters - Loretta Lynn: Still a Mountain Girl, which is set to air on PBS.

The film is part of the PBS American Masters series, which chronicles the lives and careers of influential figures in American culture. The show is in its 28th season. Previous episodes have profiled people as diverse as Bing Crosby,Woody Allen and Johnny Carson, among many others. Upcoming episodes will delve into blues great B.B. King, director Mike Nichols, Janis Joplin and Carole King, along with Lynn.

“Loretta always just said exactly what she was going through right then in her music, and that’s why it resonates with us,” Lambert says in the trailer for Lynn's episode, which is slated to be broadcast in March.

Sissy Spacek — who won on Oscar for her portrayal of Lynn in the 1980 movie film adaptation of her best-selling autobiography, Coal Miner's Daughter — also lends her observations to the documentary, along with Reba McEntire, Garth Brooks, Trisha Yearwood, Willie Nelson and Lynn herself.

The county legend's rags-to-riches story is well known; she grew up a coal miner's daughter in Kentucky and rose to fame as one of the most important country singer-songwriters of all time. "I never thought of anything like this when I was a kid," Lynn reflects. "Growing up in Butcher Holler, that's where you'll stay, you know, I thought."

"Being a part of the American Masters series makes you feel like, ‘Hey, I really have accomplished something great.'"

Loretta Lynn: Still a Mountain Girl premieres on PBS March 4, the same day Lynn will release her next album, Full Circle.

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