“…At present, the study of musical information consists of music perception, music creation and music database retrieval three aspects. In music cognition, including the analysis and recognition of [1] rhythm, harmony [2] complex, also includes music style, feel the music analysis of [3,4] like people, playing computer software system like playing music home. In the music creation, and in accordance with a style, or some piece of music composer [5] and re combination of music and visual arts combined, produce different graphics and animation according to the music.…”