《论衡·卷十八·感类篇》
师旷演奏《白雪》之曲，雷电击了下来；演奏《清角》之曲，暴风雨突然来到。
师旷奏《白雪之曲》，雷电下击，鼓《清角》之音，风雨暴至。
When Shi Kuang played the song Bai Xue, he attracted thunder and lightning. When he played the song Qing Jiao, he summoned storms.