Developed in the baroque era, the theory of is a sense or pull towards a tonal center or key

Developed in the baroque era, the theory of tonality is a sense or pull towards a tonal center or key

Explanation:  Tonality is one of the most important components in music. Good use of tonality can make music well structured, engaging and emotionally satisfying. These key relations are among the most powerful means of expression in music.

Tonality is the art or system of using keys and keys relations. The western system of tonality took centuries to develop.  The Baroque is the period of  music between the years of 1600 and 1750.