就音乐的本质而言,嵇康的《声无哀乐论》与爱德华·汉斯立克的《论音乐的美-音乐美学的修改刍议》都可视为自律论音乐美学名著。自律论是和他律论相对应的一种音乐美学名词,自律论认为制约音乐的规律和法则在音乐自身,音乐不涉及外来的东西,音乐由自身所决定。他律论美学认为制约音乐的法则和规律是来自音乐之外的。 In terms of the nature of music, Ji Kang’s “Sound without Sadness and Happiness” and Edward Hanstrik’s “On the beauty of music - Aesthetics of music aesthetics of the revised” can be regarded as self-discipline on music and aesthetics. Theory of self-discipline is a kind of musical aesthetics corresponding to his theory of law. According to theory of self-discipline, the laws and rules restricting music are in the music itself. Music does not involve external things, and music is determined by itself. His theory of aesthetics holds that the laws and rules that restrict music come from outside the music.