在第十八世纪的知识分子质疑音乐难以形容的一面，科学的一面被接受的理性和量化，但里面发生了什么的人，他们的精神和音乐体验中可以用科学来解释，这是上世纪第十八年代知识分子提出的问题。在这段时间里，音乐对作为研究对象的人的影响，在研究音乐与人类反应之间的联系时，提供了大量的能量。声音的艺术手法成为可靠的乐句和一致的结果相同的人响应提取搜索的焦点，他们实行以音乐极端控制自发从观众的情感与自己的意图。人们以这种方式成为听众的可靠性有多大，人们太过不同，不希望有如此普遍的反应，而反应可以依赖于一个人接触到音乐的数量以及对音乐的了解程度。这是说Immanuel Kant和Jean Jacques Rousseau的哲学思想的重要，认为现实是一个人实现和出现不同的每个人和人的思想，自然是免费的但具有挑战性的外部力量，如政府自由两各自的哲学思想，影响了第十九个世纪的哲学家。而且，“[B]第十八世纪末，现代性已经失去了对自己的信念，革命的承诺，技术的进步，启蒙运动的乌托邦的愿景不再是不可避免的真理，时间将展开。相反，历史变得更加有序，未来变得不那么容易实现。[ 1 ]在第十八世纪末留下了肥沃的土地，为下个世纪的知识分子开始成长自己的哲学和方式接近的问题，让他们来回答他们的前辈。
During the Eighteenth century Intellectuals questioned the inexpressible side of music, the scientific side was accepted for its rationalism and quantification, but what happened inside a person, to their spirit during a musical experience and could this be explained by science, this was the question Eighteenth Century intellectuals posed. It was the impact of music on the person that entered as a subject of study during this time, much energy was lent to the study of the link between music and human response. The artistic manipulation of sounds became the focus in the search for reliable musical phrases to extract the same human response with consistent results, they were exercising extreme control over the music in an attempt to spontaneously draw from their audience the emotion that correlates with their intent. How reliable are people to be listeners in this way, people are rather too disparate to hope for such a universal response, and a response can be dependent on the amount one has been exposed to music and how knowledgeable one is about music. It is important to mention the philosophies of Immanuel Kant and Jean-Jacques Rousseau, the idea that reality is a personal realization and appears differently to each of us and the idea that man is naturally free but has outside forces challenging that freedom such as government are two respective philosophical ideas that influenced the Nineteenth Century philosophers. And, “[b]y the end of the eighteenth century, modernity had lost faith in itself; the promises of the Revolution, the progress of technology, the Utopian visions of the Enlightenment were no longer inevitable truths that time would unfold. Rather, history became more contingent and the future less attainable.”  The end of the Eighteenth Century left fertile ground for the next centuries intellectuals to start growing their own philosophy and way of approaching the questions left for them to answer by their predecessors.