Last November, New Yorker pop-music critic Amanda Petrusich posted a photo of her dog-eared vinyl copy of Willie Nelson and Merle Haggard’s 1983 album, Pancho & Lefty, on her religiously followed Instagram account. In the accompanying text, she tipped her hat to the flea market where she bought it, for a buck, and the black leather jacket she likes to wear when she plays it—plus to Townes Van Zandt, San Quentin prison, freight trains, and potato trucks. As for the experience of actually listening to the record, she described it as, “Very solid Monday morning vibe: a little tired, a little hopeful, a true & heavy ode to holding each other up.”(Read a transcript of this episode below.)On this week’s One by Willie, she goes much…