Figure 3 model of pop music Average degree, average clustering coefficient and average shortest path (use Floyd Warshall algorithm to calculate)are listed in Table 2. Table 2 characteristics of models verage degree Average clustering coefficient Average shortest path Jiangnan music model 4.11 62.6 Menggu music model 0.019 Pop music model 9.63 0.339 3.03 Compared with Jiangnan music model and Menggu music model, pop music model has large average clustering coefficient and small average shortest path, so pop music model fits Small World From chart 1 to chart 6, indegree distribution and out degree distribution of pop music, Jiangnan music and Menggu music all follow power law, so they all fit scale free networkFigure 3 model of pop music Average degree, average clustering coefficient and average shortest path (use Floyd_Warshall algorithm to calculate) are listed in Table 2. Table 2 characteristics of models Average degree Average clustering coefficient Average shortest path Jiangnan music model 4.11 0.09 62.6 Menggu music model 2.69 0.019 40.1 Pop music model 9.63 0.339 3.03 Compared with Jiangnan music model and Menggu music model, pop music model has large average clustering coefficient and small average shortest path, so pop music model fits Small World Model. From chart 1 to chart 6, indegree distribution and out degree distribution of pop music, Jiangnan music and Menggu music all follow power law, so they all fit scale-free network