Beyonce’s former vocal coach, David Lee Brewer Jr., is releasing a tell-all book where he has made some accusations against Mathew Knowles and Tina Lawson. In the book, Brewer Jr. claimed that Mathew battled a drug addiction, writing ” in a tear scene, Celestine said that Mathew’s drug use had gotten out of hand. In another part of the book, he said, “turns out, he had escalated to stronger drugs and even stranger behaviors. Rumor had it that cocaine had long since stopped satisfying his thirst, and had turned to crack cocaine.

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