NASHVILLE, Tenn.—Tom T. Hall, the singer-songwriter who composed “Harper Valley P.T.A.” and sang about life’s simple joys as country music’s consummate blue-collar bard, has died. He was 85. His son, Dean Hall, confirmed the musician’s death on Friday at his home in Franklin, Tennessee. Known as “The Storyteller” for his unadorned yet incisive lyrics, Hall composed hundreds of songs. “In all my writing, I’ve never made judgments,” he said in 1986. “I think that’s my secret. I’m a witness. I just watch everything and don’t decide if it’s good or bad.” Singer-songwriter Jason Isbell performed Hall’s song “Mama Bake A Pie (Daddy Kill A Chicken)” when Hall was inducted into the Songwriters Hall of Fame in 2019. “The simplest words that told the most complicated stories. Felt like Tom T. just caught the songs as they floated by, but I know he carved them out of rock,” Isbell tweeted on …