Perhaps because a collection of his madrigals was the first ever printed Philippe Verdelot is considered by some as the inventor of the madrigal. I'm not sure I'd go quite that far but he was certainly the early 16th century's most important and innovative composer of Italian madrigals. He was born in France but his career was in Italy and included such important posts as maestro di cappella at the Baptistry of S. Maria del Fiore and Florence's Duomo. (A good short biography of him by Donato Mancini can be found here – mfi). His madrigal Ultimi miei sospiri is not only a delightfully expressive piece of music but also a very good example of how innovative Verdelot was. It's in six parts, which was an innovation in and of itself, and is full of contrasting textures between the voices, Verdelot also makes use of tessitura for example at 'Dite, o beltà infinita' (Speak, O infinite beauty) where he marks the change from narration to interlocution by using the highest pitch yet heard in the piece. It rapidly became famous and was used by De Monte as the basis for his setting of the Mass Missa Ultimi miei sospiri. Enjoy :-).