Monteverdi's 1607 work L'Orfeo is considered an important turning point in the artistic and technical development of opera art. The opera L'Orfeo, which is about the tragic love story of Orfeo and Eurydice from Greek mythology, pioneered the establishment of a dramatic and impactful opera art with its remarkable musical approach, dramatic scenes and, strong emotions. The innovative style that Monteverdi introduced with his opera L'Orfeo draws attention with the use of a large orchestra. In this work, approximately 40 instruments are arranged in different groups to depict specific scenes and characters. Although there is no complete orchestration structure, according to the Renaissance tradition, the performers follow the instructions given by the composer and have considerable freedom to improvise, making each performance unique. Monteverdi Orchestra has a rich and widely constructed instrumentation including many string and wind instruments. In Orfeo, stringed instruments, harpsichords and flutes generally depict pastoral themes, while brass instruments depict the feelings of the underworld. This new orchestration approach enabled each instrument to be used more effectively within the ensemble. Trombones, a relatively new instrument in the early 17th century, helped Monteverdi realize his vision of creating expressive music in his opera L'Orfeo. Monteverdi's unusual use of trombones is one of the most notable features of his opera and helped establish this instrument as an important role in orchestral music.
Keywords: Trombone, Monteverdi, Orfeo, Opera Orchestra