Musical expression and musical performance express different feelings and expressions.

1. Musical expression usually refers to the thoughts, emotions, artistic conception and other contents conveyed by musical works, that is, the spiritual connotation behind musical works. It is the deep meaning of music, which needs to be expressed and conveyed through elements such as melody, harmony, rhythm, and musical instruments in music.

2. Musical performance refers to the performer or performer showing or presenting the connotation and emotion of the musical work through intonation, timbre, rhythm, movement, etc. during the performance or singing process. Musical performance places more emphasis on the interpretation of musical works, including how to express the emotion, theme and style of the work as accurately as possible.

Musical expression is the thoughts and emotions that a musical work expresses, while musical performance is the performer's performance method and artistic means of these thoughts and emotions. The two are inseparable and promote each other to form an intoxicating piece of music.