Bob Dylan said of Leonard Cohen, who passed away yesterday, November 10, 2016, at the age of 82, is “very much a descendant of Irving Berlin,” in that both are “incredibly crafty. Leonard particularly uses chord progressions that seem classical in shape. He is a much more savvy musician than you’d think.” The many, many covers of Cohen songs, by artists both expected and unorthodox, prove his latter observations to be true. But like Dylan’s body of work, Cohen’s compositions have been transformed in the hands of other people, and functioned as malleable source material ripe for interpretation and illumination.