Various notes are a common expression technique in music, and they are also an important way for music to infect people's hearts. This technique can make the music more vivid and interesting, and trigger different emotional reactions in the audience. When the notes alternate between high and low, sometimes cheerful and sometimes sad, this change not only reflects the beauty of the music, but also touches the listener's heartstrings and triggers cries of excitement.

In music, notes that change in pitch or pitch also have different meanings. For example, high notes are often used to express bright, cheerful, and passionate emotions; while low notes are often used to express heavy and sad emotions. When high and low notes are used alternately, the music can also show vivid contrasts and become more colorful. This change enriches the expressive power of music and allows listeners to experience the emotion of music more deeply.

High and low notes can also reflect their beauty in other areas. For example, in poetry, the high and low tones can make the poem more rhythmic and allow readers to feel the emotional expression of the poet; in the art of painting, the high and low patterns and lines can become more mysterious, three-dimensional and more expressive. Highlight the theme in the work. Therefore, the changing notes are not only expressions in music, but also an important manifestation of cultural and artistic diversity.