Not many music writers warrant a biography. Lester Bangs was one. Maybe Tosches or Kent. But Everything Is An Afterthought, by Kevin Avery, is a singular piece of work, a hybrid bio and anthology. Nelson was the Orson Welles of rock letterdom, a man whose profiles of Springsteen and Zevon were masterpieces of the form. A slow stone-cutter of a writer, a cinephile and a noir buff (and an inveterate deadline-misser), he shot himself in the foot many times, but Avery’s book makes the reader misty-eyed for a time when music journalism was populated by hard-nosed evangelists, not suck-ups or career snarks.