Orpheus, the son of the god Apollo and the muse Calliope, a demigod blessed with the power to play intensely emotional and beautiful music, has been a great source of inspiration for many composers and librettists. and writers through the ages. In this comparison, Orpheus serves as a paradigm in the construction of opera, particularly from the time of Monteverdi, and in the way in which this art form changed radically from then until the time of Glück . The orchestration, musical structure, and evolving characteristics of the opera will be discussed, while focusing on a notable piece from each opera that will be directly compared. The argument for each composer's success in achieving their goals in this art form, despite their highly revered and criticized works, will be analyzed through the performance of the recitative "Possente Spirto" from the Orfeo de Monteverdi and the aria “Che faro”. senza Eurydice” from Glück’s Orfeo ed Eurydice. The Atlanta Opera Guide (2009:12) explains that the myth of Orpheus begins with his marriage to a nymph named Eurydice, and shortly afterward she was killed by a fatal snake bite. Distraught, Orpheus goes to the underworld and by singing the saddest songs and playing beautiful music on his lyre, Hades and Persephone, gods of the underworld, allow him to enter the underworld to find Euridyce, on the condition that he don't look at her. until they left the underworld. Orpheus glanced at Eurydice, to try to console her and to make sure that Hades was not deceiving him, and she was kept in the Underworld forever. Orpheus asked for a second chance, which was refused, and, in his grief, played some of the saddest music. The young Thracian girls, who had tried to seduce him without success, became so disgusting...... middle of paper ......e faro senza Eurydice" and throughout his opera, in which he focuses more on simple beauty in the melodic vocal line and a clear relationship between recitatives and arias in the structure of his opera. After enjoying and studying both operas, it can be said that between the times of Monteverdi and that of Glück, the innovations of opera are evident. The growth and development of opera over a 150-year period between the earlier Baroque era and the era of opera reform gives way to the characteristics of each era. Both operas are model examples of how one facet of musical development can change through the ages, highlighting the continuing evolution of music. The myth of Orfeo strongly correlates with the concept of opera in general: it makes a lasting impression on a wide range of audiences and ultimately demonstrates the power of music..