The Italian composer Claudio Monteverdi (1567–1643) wrote several works for the stage between 1604 and 1643, including ten in the then-emerging opera genre. Of these, both the music and libretto for three are extant: L'Orfeo (1607), Il ritorno d'Ulisse in patria (1640) and L'incoronazione di Poppea (1643). Seven other opera projects are known; four were completed and performed during Monteverdi's lifetime, while he abandoned another three at some point. The libretto has survived for some of these lost operas.
The opera genre emerged during Monteverdi's earlier career, first as courtly entertainment trying to revive Greek theatre. The first known work to be regarded as an opera in the modern sense is Dafne (1598) by Jacopo Peri, and his Euridice (1600) is the earliest surviving one.