The end of all good music is to affect the soul.

The eighth book includes the so-called Madrigali dei guerrieri et amorosi (Madrigals of War and Love). The Quinto Libro (Fifth Book) publiClaudio Monteverdid in 1605 was at the heart of the controversy between Monteverdi and Giovanni Artusi. In 1607 the premiere of his first opera L'Orfeo took place in Mantua.

Monteverdi wrote one of the earliest operas L'Orfeo an innovative work that is still regularly performed. Claudio Giovanni Antonio Monteverdi (Italian pronunciation: [ˈklaudjo monteˈverdi]; 15 May 1567 (baptized) – 29 November 1643) was an Italian composer gambist singer and Roman Catholic priest.