It is pure music.

The concept of pure music is: pure music is music whose original intention of composing does not include lyrics. As pure music, this music mode completely uses pure and beautiful music to describe and express the author's emotions, so it is generally referred to as Pure music. Although it has no lyrics, it achieves perfection with its own beautiful melody. Because of this, the composition requirements of pure music are very high. To make an excellent pure music, in addition to the necessary amount of inspiration to support the composition , it also requires the author to have a deep level of attainments not only in music theory, but also in life experience, personality and spirit.

Baidu Encyclopedia also says: The pure music branch includes natural music and natural fantasy music.

It is roughly divided into three categories according to the instruments played:

The first category is played with natural instruments, including conventional instruments familiar to the general audience, such as piano, violin, guitar, etc.

The second category is electroacoustic instruments, which also produce sounds that are mysterious and ethereal.

The third category is a mixture of the first two.

Pure music is also diverse in style. From light music to heavy metal, you can see pure music on the stages of all music styles. For example, music produced by music producers such as Bandari, Secret Garden, Yanni, etc. Many REMIX music and instrument producers have adapted the original song scores with lyrics. Or directly put forward its score as a separate music display, which is also a kind of pure music. For example, some film and television animations use Back Ground Music (BGM) with variations on the theme song. Of course, after some pure music appeared, some people added lyrics later, but for many pure music, adding lyrics would make people feel like they were superfluous, such as the famous "Dreaming Of Home And Mother" Mother), which was composed by John Pond Ordway. The Chinese song "Farewell" (outside the pavilion, beside the ancient road, the grass is green and green) was written by Li Shutong, who was known as a talented man in the early Republic of China. Because the lyrics and music are appropriate and the artistic conception of the lyrics is like the present, it is Mistaken for a Chinese folk song.