Tina Knowles used to sit under a pecan tree as her mother recited the history of their family, stretching back generations. Now, the mother of Beyoncé and Solange has given her own story to the world in "Matriarch: A Memoir." She sat down with Associated Press entertainment journalist Gary Gerard Hamilton to discuss the book, why she calls Beyoncé's "Cowboy Carter" a "masterpiece" and how Solange always held her accountable for her shortcomings as a parent. #tinaknowles #beyonce #cowboycarter