Cesc Esteve as his greatest work) possessing the most practical interest, especially regarding Maximilian's life, and the Austria giving a complete history of the nation up to 1519. He had notable influence on the development of the musical tradition in Austria and Germany as well. Several historians credit Maximilian with playing the decisive role in making Vienna the music capital of Europe. Under his reign, the Habsburg musical culture reached its first high point and he had at his service the best musicians in Europe. He began the Habsburg tradition of supporting large-scale choirs, which he staffed with the brilliant musicians of his days like Paul Hofhaimer, Heinrich Isaac and Ludwig Senfl. His children inherited the parents' passion for music and even in their father's lifetime, supported excellent chapels in Brussels and Mechelen, with masters such as Alexander Agricola, Marbriano de Orto (who worked for Philip), Pierre de La Rue and Josquin Desprez (who worked for Margaret). After witnessing the brilliant Burgundian court culture, he looked to the Burgundian court chapel to create his own imperial chapel. As he was always on the move, he brought the chapel as well as his whole peripatetic court with him. In 1498 though, he established the imperial chapel in Vienna, under the direction of George Slatkonia, who would later become the Bishop of Vienna. Music benefitted greatly through the cross-fertilization between several centres in Burgundy, Italy, Austria and Tyrol (where Maximilian inherited the chapel of his uncle Sigismund). In the service of Maximilian, Isaac (the first Continental composer who provided music on demand for the monarch-employer) cultivated "the mass-proper genre with an intensity unrivalled anywhere else in Europe". He created a huge cycle of polyphonic Mass Propers, most of which was published posthumously in the collection Choralis Constantinus, printed between 1550 and 1555 – David J. Rothenberg comments that, like many of the other artistic projects commissioned (and instilled with Maximilian's bold artistic vision and imperial ideology), it was never completed. A notable artistic monument, seemingly of great symbolic value to the emperor, was Isaac's motet Virgo prudentissima, which affiliated the reigns of two sovereign monarches – the Virgin Mary of Heaven and Maximilian of the Holy Roman Empire. The motet describes the Assumption of the Virgin, in which Mary, described as the most prudent Virgin (allusion to Parable of the Ten Virgins), "beautiful as the moon", "excellent as the sun" and "glowing