Musical temperament directly connects to sound perception and natural vibrations.

Evidence

In polyphonic music, the issue of temperament has to be decided: what are the relationships of the frequencies of the different notes? What are the frequencies of the keys in figure 26.1? Temperament is one of the most interesting and controversial subjects in music and music history. An amalgam of qualitative aesthetic and quantitative scientific considerations, temperament is closely tied to the ear-brain system for sound and pitch perception, and to vibration of natural objects as well, which makes it a perfect subject for us. — Eric J. Heller, Why You Hear What You Hear- An…, 2316

Categorization

• DEFINE: Introduces temperament as the relationships of frequencies between notes in a scale.