4. Automatic Composition 4.1 Random walk algorithm A combination of regional music and pop music should have features of them both Figure 4 shows the combined model of pop music and regional music. To make pop-regional music have more pop music tone, the pop music model have more nodes and edges than Jiangnan music model and Menggu music model by coding more pop music. Some other regional music are also included nan musIc Shanxi music Sichuan Pop music :·,· Random walk algorithm is that first randomly choose a node in the network and then connect it with its neighbor node v with possibility P=w∑wi wy is the weight of the edge between the node and node v. Then connect node v with its neighbor in the same way Using this algorithm music can be written, but it can be not pleased to hear. So add some motif influence in the algorithm for development 4.2 Development Based on Motif Motif is of great importance for melodic music. To make the song have more outstanding regional flavor, motif sources are filtered from regional music. To be more specific, only motif of tune is considered to help remove the disharmony in4. Automatic Composition 4.1 Random Walk Algorithm A combination of regional music and pop music should have features of them both. Figure 4 shows the combined model of pop music and regional music. To make pop-regional music have more pop music tone, the pop music model have more nodes and edges than Jiangnan music model and Menggu music model by coding more pop music. Some other regional music are also included. Random walk algorithm is that first randomly choose a node in the network and then connect it with its neighbor node v with possibility: Pv=wv/Σwi wv is the weight of the edge between the node and node v. Then connect node v with its neighbor in the same way… Using this algorithm music can be written, but it can be not pleased to hear. So add some motif influence in the algorithm for development. 4.2 Development Based on Motif Motif is of great importance for melodic music. To make the song have more outstanding regional flavor, motif sources are filtered from regional music. To be more specific, only motif of tune is considered to help remove the disharmony in Jiangnan music Hunan music Shanxi music Sichuan music Menggu music Pop music