Glaser’s poster advertises a special version of the Casals Festival in Puerto Rico celebrating the centennial of the life of Pablo Casals, the virtuoso cellist, conductor, and composer who had founded the annual music event in 1957. The image, showing the dark figure of Casals himself walking away from the viewer across the brilliant yellow sands and blue waters of a beach as if in final farewell, is both eye-catching and elegiac.