Natasha Trethewey addresses the chapel. Photo by Luke Payne On Tuesday, Nov. 1, former U.S. Poet Laureate Natasha Tretheway spoke at Convocation. Professor Hanford opened convocation with Pièce sur des airs populaires flamands by Nadia Boulaner, and Fantasia and Fugue in g minor by Johann Sebastian Bach. After a welcome by President Burstein, Conservatory faculty…