Abstract: Music is the art of emotion, and musical emotion is an indispensable part of musical works. Emotion in music can make music beautiful, and it can make people have emotional experience of music, so that music works can cause the listener's emotional infection and buzz, and feel the emotions conveyed by music in a pleasant physical and mental experience. Therefore, the performance of musical emotion in musical works is various. In any musical work, the emotions expressed by music must be diverse. This paper will focus on the role and position of musical emotion in musical works and the performance of musical emotion in musical works. Keywords: musical emotion; Music works; Performance music is an art to express inner feelings through sound, and it is also one of the earliest forms of human performance art. With the birth and development of psychology, people's research on the expression of musical emotion in musical works gradually tends to a scientific and empirical description and explanation, and at the same time, they also conduct in-depth research on musical emotion. The research on the expression of musical emotion in musical works involves a wide range of disciplines, which shows that it is necessary to conduct in-depth and extensive research on musical emotion. I. The Function and Position of Musical Emotion in Musical Works As the old saying goes, "Poetry speaks with ambition and sings with words", "When words cannot be expressed, please let the music ring!" All this shows that the position and role of musical emotion in musical works can not be underestimated. Any art originates from life, but it is higher than life. They reflect and embody life with unique forms and techniques. Therefore, musical emotion and musical form are inherent and perceptual in any art. The deeper you understand and appreciate the inner feelings contained in the form of the work, the more you can fully show the charm and charm of music. On the contrary, if you only master the form and skillful skills of expressing the work without emotion, you can only express the formal meaning of the work mechanically like a pendulum, and the resulting effect is boring and difficult to impress the audience. The role and position of musical emotion in musical works is obvious. The biggest feature of music is to excite interest and touch emotions, so that people can enjoy music art happily and receive aesthetic education at the same time. Music works can highlight emotional education and experience, improve aesthetic ability, purify the soul, and cultivate normal and healthy psychology, good and complete personality and beautiful and noble sentiments. Feeling music emotion is an important field of music learning, the foundation of the whole music learning activity and an effective way to improve the aesthetic ability of music. The formation of good musical perception and appreciation ability is of great significance for enriching emotions, improving cultural literacy and improving physical and mental health. Second, the performance of musical emotion in musical works (1) Musical emotion can call the audience's innermost feelings, which can make the audience better understand the musical artistic conception of musical works. Musical works are rich in beautiful content and vivid emotions. The emotional music situation can make the audience really be in the scene where emotion, scenery and sound blend, truly understand the ideological content of the work, and urge people to deeply understand the connotation of the work. Therefore, music works should integrate the "emotion" in music, improve people's musical perception ability from the perspective of emotion, touch the listener's heartstrings through "emotion", let the listener be in the situation, guide the listener to feel, imagine and understand, and make the listener fully integrate into the music works, so as to produce a strong situational awareness effect and enjoy beauty. In the process of appreciating music works, we should firmly grasp the main thread of emotion, and through the characteristics of music emotion and emotion, we can continuously enrich the emotional experience of listeners, improve the emotional intensity of listeners, and make people's emotions and emotions communicate harmoniously with music emotions and emotions. Music emotion and emotional experience can't just stay on the external level, but also need deep-seated experience, seeking that kind of touching and shocking artistic effect and realm. Let the music itself face the audience more, and call the audience's emotion with the emotion of music. (2) Music emotion can set off the emotional connotation in music works. Music is an art that is good at expressing and inspiring feelings, and the emotional connotation contained in music works is very rich. In short, the process of music appreciation is the process of emotional experience, which is not only the process for the audience to experience the emotional connotation of music, but also the process for the appreciator's own feelings and the feelings expressed in music to blend with each other. Emotional experience is an indispensable part of music appreciation, whether for ordinary music listeners or for music experts. In order to experience the emotional connotation of music works more deeply, on the one hand, the audience should experience the emotional expression of music works more accurately and carefully by listening to the music itself repeatedly, and on the other hand, they should study and understand the emotional connotation of music works from all aspects. Only in this way can they correctly grasp the emotional connotation of music works. (3) Emotions in musical works can be expressed by expressions, which is the most direct and effective way to express musical emotions. Music works can touch the inner feelings of the audience, and almost all the music that can infect and touch the audience is done through expressions. Therefore, musical emotion is reflected in musical works through expressions. The expressions of musical works include: strength, speed, rhythm, timbre, harmony, orchestration and so on. Only by correctly and comprehensively understanding and feeling the expression of music works can singers accurately convey their feelings to the audience. Expressions can express musical emotions, thus making musical works alive. Third, it is concluded that the performance of musical emotion in musical works is diverse, and the key lies in whether the audience can understand the profound connotation of musical works. To stimulate the interest in listening to music and form a good habit of listening to music, we must understand the musical emotion in music works. Music is an art of expressing life. If we want to deepen our understanding of music works, we must deeply understand the emotional connotation of music works. References: [1] Lu Wei. Understanding the "comprehensiveness" of art teaching [J]. shanghai research on education, 23(5).