The twentieth century is considered the most prosperous period in the different musical schools, which are varied and varied in their styles, and there is no doubt that the musical currents that appeared in the twentieth century had a value like those that appeared in the Baroque era, the classical era and the romantic era, and this explains for us the wave of artistic and thus musical experiences It spread throughout Europe at the beginning of the twentieth century, which was all concerned with opposing the style of romantic music, steeped in emotion and emotion, and searching for new rules and concepts for realistic music with no imagination or dreams, music in line with the spirit of the new era and the developments of life in it; With the development and the intermingling of civilizations, what is known in music as "jazz" appeared. It is considered one of the modern musical currents that appeared in the twentieth century to keep pace with the spirit of the new era and the developments of life in it, and "jazz" music is the real American addition in the world of music, which is due to African Negro music, which was the true expression of the persecution of immigrants from Africa to America , And interacted with classical European music and became a recognized musical accent, and "jazz" gradually developed into a symbol for the whole of Africa, and "Medley Mozart" is one of the most important works of art that was executed in 2006 CE expressing the features of classical singing with the mixing of features of folk jazz singing Contemporary; Therefore, this artwork is considered one of the landmarks in the world of Afro-American operatic and folk singing, with its mixture of Mozart melodies, lyrics, techniques, performance styles and lyrical expression; However, this work has not been researched and analyzed by a specialized scientific study or specialized research. Accordingly, the researcher chose that artwork within the presentation of Mozart Spirit by composer Dmitry Pavlov and worked to define it as a sample and subject of the current research. Thus, the researcher found the importance of dealing with "Mozart's mix" by studying, analyzing, and determining each of the performance and expression styles used in the lyrical performance. In order to benefit from it to serve the students of the International Singing Department of the Faculty of Specific Education. - The study was divided into: ( First: the theoretical framework, second: the analytical framework, the research results, the list of references, Appendices, the research summary in Arabic and English( .