While still a boy, Monteverde was engaged as viola player in the private orchestra of the Duke of Mantua, and there his talent became so evident that the ducal music director, Messer Marc Antonio Ingeneri, taught him counterpoint and the art of composition as it was then practised. Under this stimulation, Monteverde published his first composition at the age of sixteen, in the year 1584. They were called "Canzonettas for three voices," and were printed at Venice. Quite naturally, considering the youth of the composer, these compositions do not show the originality which later rendered his works famous. Their more noticeable peculiarity, judging them from the standpoint of their own day, was a degree of laxity, at times approaching carelessness, in counterpoint. It is evident even thus early that Monteverde's ear for melody enabled him to tolerate harmonic faults between the voices which, without this appreciation of melodious flow, would have been highly disagreeable. His position in the service of the prince was by no means a sinecure. A letter of his brother, Giulio Cæsar Monteverde, declares that he was incessantly occupied, not alone with the music of the church, but also with that for chamber concerts, ballets, and all sorts of divertissements, making constant demands upon the fertility of the overflowing invention of the young musician. He seems to have been in a somewhat personal relation to the Duke, and all through life he evinced his attachment to members of the Gonzaga family. His first book of madrigals was published in 1587, when the young composer had reached the age of eighteen. Five other books followed them, dated 1593, 1594, 1597, 1599, and finally 1614. All these were printed at Venice, which was then the chief book-making city of Europe. In a later portion of this discourse the innovations characterizing the third book of madrigals will be more fully considered. Meanwhile Monteverde appears to have steadily advanced in his art, and in the favor of the prince. The brother's letter, already mentioned, is authority for the statement that in 1599 he spent some months at the baths of Spa, and brought back from thence certain traits of the French style. Very soon after the publication of the third book of madrigals, Monteverde found a critic. A certain Canon Artusi, of St. Saviour, in Bologna, published a brochure upon "The Imperfection of Modern Music," taking for his text one of the madrigals in Monteverde's third book. This led to further communications from Monteverde himself, prefixed to one of his later volumes, in which he declares that "harmony is the lady of the words" (_signora della orazione_), meaning thereby that the composer must first consider the dramatic needs of his text, and only thereafter permit himself to be governed by those of music as such.