Instrumental music is a different tune altogether. The focus on harmony in Western music makes it an almost natural medium to convey unity and balance. Many famed composers—most notably Bach and Mozart—paid close attention to keeping their music balanced and harmonious. In fact, classical music, particularly Mozart’s, is so well balanced and wholesome that the University of Leicester, UK, found that it increases milk production in dairies! Although the composers were probably unaware of the depth to which this balance goes, or the purposes for which their music would one day be used, it is this quality that has assured their popularity up to the present day...