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.
Necessarily the opera must be more romantic than the symphony. There was nothing in the world she loved so much as a symphony orchestra. The symphony clearly reflects the spirit of the cantata, which follows. In 1811 another was held, for which he wrote his first symphony. He gave a series of symphony concerts which aroused the greatest enthusiasm. His first symphony appeared in 1851, and was performed with success. If I were a musician I would take it as the subject for the adagio in a Wesleyan symphony.