For twenty-four or more years composer Pierre de la Rue (d. 1518) provided music for one of the leading musical institutions of his day, the grande chapelle of the Habsburg-Burgundian court. Serving successive rulers Maximilian I, Philip the Fair, Juana of Castile, Marguerite of Austria, and the future Charles V, La Rue surpassed a dozen composer colleagues in his creation of polyphony to meet the needs of the court and its extravagant liturgy. This study, the first ever in English, traces La Rue's life and career, explores aspects of his compositional output, and recounts the reawakening of modern scholarship to his unique contributions.