It is a music style of Tao Zhe. "SP" represents the words "Swing" and "Pentatonic". "Swing" is a kind of rock music, symbolizing a style of Tao Zhe; and "Pentatonic" is the five-note scale commonly used by Tao Zhe, and it is also the most commonly used in many of Tao Zhe's works. One kind, so SP are the two most important elements in Tao Zhe's works, and they are also the concentrated expression of his music style and composition skills.