One freezing winter night in the 1970s, while teenagers back in Philadelphia, Mississippi, were asleep in their childhood beds, a young Marty Stuart held on inside Lester Flatt’s Flxible Clipper tour bus as the heavy coach hit a patch of black ice and spun out of control across a dark highway. Stuart had left home in September 1972 at just thirteen years old to join Flatt’s bluegrass band, The Nashville Grass. For six years, from 1972 to 1978, that old bus was his real home for more than two hundred days a year, rolling hundreds of thousands of miles from the Deep South through the northern states and up into Canada. At fourteen and fifteen, instead of walking into a morning classroom, he curled up in a narrow bunk listening to the wind howl and tire chains grind against snow. In the 1970s, winter interstates lacked modern warning systems, and vintage tour buses carried few safety features. When the coach lost traction and slid across the frozen asphalt during that overnight haul to make the next day’s show, the musicians inside feared not only for their own lives, but for Flatt, their aging mentor whose heart health was already failing. The bus came to a stop just short of disaster. Stepping out into the bitter cold and silence of the icy road to inspect the coach, the teenage prodigy realized that every plan and bit of applause could vanish in a single skid. Rather than packing up and going home to his parents, Stuart grew even closer to Flatt and his older bandmates, bound together like family who had survived the same close call. When he walked onto the stage the next day with his legs still shaky from the night before, he played his mandolin with a quiet gratitude just to be alive and holding the instrument. Decades later, leading his own band, The Fabulous Superlatives, down American highways, Stuart still carries the habit of praying over the night drives and treating every set under the lights like a gift.

Over Labor Day weekend in September 1972, thirteen-year-old Marty Stuart climbed aboard a vintage Flxible Clipper coach in Delaware painted with the words “Lester Flatt and The Nashville Grass Sponsored by Martha White Flour” to play his first show as a professional bluegrass musician.

Two weeks earlier, at the end of August 1972, his parents, John and Hilda Stuart, had put their son on a Greyhound bus in Philadelphia, Mississippi, with his mandolin case and sixty dollars in his pocket to visit his friend Roland White in Nashville. White, the mandolin player for the Nashville Grass, invited the teenager out to Delaware for the Labor Day festival, where fifty-eight-year-old Lester Flatt listened to Stuart tear through Bill Monroe’s instrumental “Rawhide” during an audition on the tour bus and hired him on the spot.

Instead of returning to ninth grade in Neshoba County, Stuart moved into the home of Flatt and his wife, Gladys, in Hendersonville, Tennessee, and enrolled in high school correspondence courses so he could travel two hundred days a year. Just weeks after his fourteenth birthday, in the fall of 1972, Stuart walked out onto the stage of the Ryman Auditorium with the Nashville Grass for his debut on the Grand Ole Opry, standing in the wings beside Roy Acuff, Tex Ritter, and Brother Oswald.

For the next six years, from 1972 to 1978, the back end of Flatt’s diesel Flxible Clipper served as Stuart’s classroom, bedroom, and front porch. Rolling hundreds of thousands of miles across the United States and into Canada, the teenager shared tight quarters with veteran bluegrass sidemen more than three or four times his age, including fiddler Paul Warren, tenor singer Curly Seckler, banjoist Haskell McCormick—and later Kenny Ingram and Blake Williams—dobro player Charlie Nixon, and bassists Johnny Johnson and Pete Corum.

Out on the highway, the older musicians looked after the kid they called “Marty boy” while initiating him into the daily grind of a working road band. Inside the swaying coach, Stuart learned to play rookie card games of pitch and rook, listened to Paul Warren and Curly Seckler swap stories from the 1940s and 1950s radio barn dances, and absorbed the timing of traditional country music straight from the men who had helped invent it.

Flatt himself became a second father to the Mississippi teenager, giving him an allowance, checking on his schoolwork, and teaching him how to pace a crowd without wasting a note. Even as Stuart went through a teenage rock-and-roll rebellion in the mid-1970s—growing his dark hair down to his shoulders and wearing flared jeans—Flatt kept him right at the front of the stage beside the band’s matching suits, trading vocal harmonies and letting the kid step forward on both mandolin and fiddle.

Those six years aboard the Martha White bus also carried the physical hazards of 1970s highway travel, before modern interstate warning systems or updated tour coach safety gear existed. During one freezing winter overnight haul, while teenagers back in Mississippi slept in their beds, Stuart held on inside the Clipper as the heavy bus hit a sheet of black ice and spun out of control across a dark highway.

As tire chains ground against the snow and the coach slid across the frozen asphalt, the bandmates braced themselves not only for their own survival, but for Flatt, whose heart had already weakened leading up to his open-heart surgery in 1975. When the bus finally came to a halt short of a wreck and Stuart stepped out onto the silent, icy road to inspect the coach, the close call bound the teenager even closer to Flatt and the men inside.

Walking onto the stage the following day with his legs still unsteady from the night before, Stuart played his mandolin with a sharp awareness of how quickly a show, a career, or a life on the highway could vanish.

As Flatt’s health declined in the late 1970s, Stuart stayed by his side until the bandleader gently told him in 1978 that it was time for the nineteen-year-old to step out into the wider music world on his own. After Flatt died of heart failure on May 11, 1979, at age sixty-four, Stuart went on to tour with fiddler Vassar Clements, flatpicker Doc Watson, and Johnny Cash before launching his own solo hitmaking run and leading his band, the Fabulous Superlatives.

More than five decades after climbing up the steps of that Martha White coach in 1972, whenever someone asks where he grew up, Stuart still answers that he was raised in the back end of Lester Flatt’s bus, where he learned to pray over the night drives and treat every set under the stage lights as a gift.