Upon the death of the ducal music director, Ingeneri, Monteverde succeeded to the place. This appears to have been in 1603, according to the preface to the sixth set of his madrigals (in 1614), in which he speaks of having been in the service of the Duke of Mantua ten years. The famous "representative style," in other words, dramatic music, had already been discovered, as recounted at greater length in the essay upon Italy. It is sufficient for our present purpose to compare the dates. It was about 1595 that Vincenzo Gallilei intoned at Count Bardi's his epoch-making monologue upon "Ugolino," and in 1597 the first opera, "Dafne," was privately performed at the house of Count Corsi. In 1600 the first opera, "Eurydice," the poem by Rinuccini and music by Jacopo Peri, was publicly performed upon the occasion of the marriage of Henry IV., of France, to Catherine de Medici. This work has the double honor of having been the first opera ever publicly performed and the first opera ever printed. A copy of the original edition of A. D. 1600 is now in the Newberry Library of Chicago. The fundamental problem of the new style was that of furnishing appropriate musical cadences for the impressive utterance of the words of the text. Hence the musical handling of "Eurydice" is very meagre. There is only one short instrumental ritornello, and only one short aria, of sixteen measures. Almost the entire remainder of the work is in a rather stiff and formal recitative. No attempt is made at instrumental coloring. The accompaniment is simply intended to support the voices and assure the singers of their pitch, quite after the ideas advanced by Artistoxenos, and applied universally in Greek tragedy. The tonality in "Eurydice" is almost wholly minor.