Adrian Willaert
Willaert then got the most important musical job in the whole of Europe at that time: he became maestro di cappella (director of music) at the church of St. Mark's at Venice.  The director who had been there before had not been very good, so Willaert made the music in that church really great again.  He stayed in that job until his death.  He was very famous and young composers came from all over Europe to study with him and learn how to be a composer.