service agreement. A contract entered into for a contractor to provide some form of useful task for their employers in return for compensation. A service agreement can also be a feature offered along with a warranty for a product for the manufacturer to provide service or coverage of any costs of service in case the product malfunctions during a given period.
Euridice (1600) is the first surviving opera. The libretto was by Rinuccini, music by Peri, with some portions by Caccini. This was also significant in that it used recitative, a foundation of operatic storytelling. But--what was the first great opera? My vote is for Monteverdi's Orfeo, libretto by Striggio, premiered in 1607.
Updated March 05, 2017. Composer Henry Purcell (1659-1695)'s first opera and one of the earliest English operas, Dido and Aeneas was written around 1688 and premiered shortly after at the Josias Priest Girls School in London. The opera is based on the story of Dido and Aeneas from Book IV of Virgil's Latin Epic Poem,