樂者樂也
Music Is Joy
夫樂者、樂也，人情之所必不免也。故人不能無樂，樂則必發於聲音，形於動靜；而人之道，聲音動靜，性術之變儘是矣。故人不能不樂，樂則不能無形，形而不為道，則不能無亂。先王惡其亂也，故制雅頌之聲以道之。
Music is joy — something that human feelings cannot avoid. People cannot be without joy; joy must find expression in sound and voice, and take shape in movement and stillness. The Way of humanity — sound, voice, movement, and stillness — exhausts all the transformations of nature and technique. People cannot be without joy; joy cannot be without form; and form that is not guided by the Way cannot be without disorder. The former kings hated this disorder, and so they created the sounds of the Elegantiae and Hymns to guide it.