Automatic Music Generation and Machine Learning Based Evaluation

This paper describes the automatic music composition system and automatic music evaluation system. The system composes short pieces of music by choosing some factors in music, such as pitch interval. timbre, tempo, rhythm. The most important features of the composition system include using the concept of mode, and density. mode control the pitch interval and densyty control the rhythm of music. We use Neural Network algorithm for automatic evaluation system of music. especially we used Back Propagation algorithm for objectification of user's taste.