ML True Crime: Deleted Scenes 2 by VaccaD

Question 15

WHAT ITALIAN RENAISSANCE COMPOSER, whose output includes six books of madrigals and the Tenebrae Responsoria of music for Holy Week (and whose mastery of harmony led him to use devices and techniques that would not be seen again until the 19th century), is arguably most famous for having murdered his wife and her lover after catching them in flagrante on October 16, 1590?

(Man, did we have a lot more classical music questions than we could use.)