In the early fourteenth century, musicians in France and later Italy established new traditions of secular and sacred polyphony. This ars nova, or "new art," popularized by theorists such as Philippe de Vitry and Johannes de Muris was the among the first of many later movements to establish the music of the present as a clean break from the past. The rich music of this period, by composers such as Guillaume de Machaut and Francesco Landini, is not only beautiful, but also rewards deep stud...