Brandi Carlile’s memoir, Broken Horses, charts the singer-songwriter and producer’s upbringing in the impoverished outskirts of Seattle, as well as her experience being openly gay within a homophobic faith. As the book describes, these difficult moments shaped Carlile as well as her art, from her early days singing in local competitions to opening for Dave Matthews Band. Honest and insightful, the memoir is an unflinching look …