After John faced a second bout with cancer in 2013, it seemed as though he was playing in extra innings — but he made the most of every bit of it. When Amanda — a fiddler and one of John’s favorite people — and I went into the studio to play and sing on his final album, 2018’s “The Tree of Forgiveness,” we were amazed by the beauty of the songs he’d written after more than 50 years of writing music. John was still razor sharp and he still had a story to tell. On the subsequent tour he played to the biggest audiences he’d ever drawn. He turned 72 that year.

But John’s work wasn’t just about his own music. In 1984, he and his longtime manager Al Bunetta and Dan Einstein started the independent record label Oh Boy Records. In the mid-’80s the major labels seemed like the only game in town, but Oh Boy succeeded against the odds. It released John’s albums along with records by Kris Kristofferson, Dan Reeder and Todd Snider, and it’s still finding new talent and operating with its artists’ best interests in mind.

He was a mentor to me and to my wife, who even helped him work on his songs sometimes, in between playing pranks on him while they were on tour. John saw her as a brilliant songwriter in her own right, and if John said you were a great songwriter, you knew it was true.

And there was more to John’s life than music. John and Fiona Prine had a beautiful relationship, loving and balanced and kind. Fiona understood John better than anyone else. After Amanda and I were married, Amanda started asking all the couples we knew, “What’s the secret to staying together?” John and Fiona gave the same answer, and it was the best one we’ve heard so far: Stay vulnerable. John remained vulnerable in love and in his work. He never played it safe.

When I was a baby, my 17-year-old mother would lay me on a quilt on the floor of our trailer in Alabama and play John Prine albums on the stereo. Forty years later, my daughter would call him Uncle John as he bounced her on his knee. My wife and I would sing his songs with him in old theaters or sometimes in his living room. In the summer, we’d all eat hot dogs with our feet dangling in his swimming pool. Now he’s gone and my heart is broken.

This week, John Prine danced off this stage and onto the next one, and I like to think he’s somewhere sharing a song and a cocktail with all the friends he outlived.

Jason Isbell is a singer and a songwriter.

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