As in the earlier chapters, the importance of context is emphasized, particularly in light of the central investigation which began already in Part1: what generates a tonal center, its sense of centrality, and its sense of stability?

• 在较前面的几章里，强调乐曲脉络的重要性，尤其按照在第一部份里已经开始的重要研究上：什麽产生了调性的中心、性中心的观念、及调性稳定的观念?