classical music. In technical musical usage this means music composed during the late eighteenth and early nineteenth centuries, characterized by the development of the sonata by such composers as Mozart. In popular use, however, the term is used to mean any serious art music as distinct from jazz, pop, or folk.
The definition of vague is something unclear, hazy or uncertain. An example of vague would be directions to a house that don't include street names. YourDictionary definition and usage example.
Answer Wiki. This is a good question with a complex and somewhat vague answer. The vagueness lies in the interface between psychology and physiology. In essence, what you feel/ perceive about your body is a compilation of your mental/ emotional state that is driving your physiological response.