How to distinguish folk songs, adapt folk songs and create songs?

Distinguishing between folk songs, adapting folk songs and composing music mainly depends on the creator of the work and the specific situation of the work. The pure folk songs actually refer to the original ecological songs, that is, some songs created collectively by local people and passed down from mouth to mouth in folk and productive labor. Most of the adapted folk songs are based on the melody of a certain area, and are adapted by means of development, expansion and variation, which greatly improves their artistry. ? For example, Meng Jiangnv written by Zhixin Wang developed into an eight-minute song based on the basic melody of Meng Jiangnv. China's works are very distinctive. However, compared with the original folk song Meng Jiangnv, it has expanded in length, deepened the connotation of the work and increased the difficulty of singing. If it is used as a training track for national vocal music students, it belongs to the fourth and fifth grade textbooks. ? There are high notes, low notes and emotional changes, and these songs are works adapted from folk songs. Writing a song refers to writing a work created by a composer. For example, who doesn't say my hometown is good This song is very similar to Shandong folk songs. Many people think it is a folk song, but it is actually a song creation, which is an episode of the movie "Red Sun". ; However, sometimes, folk songs are very similar to writing songs. For example, the Tibetan folk song "My Love is Like Malaysian Flower" is very complete and foreign, but this song is a folk song. ? So sometimes it is difficult to define it simply from the style, and it must be viewed comprehensively from its formation process.