中图分类号：J613.6 文献标识码：A DOI：10.3969/j.issn1003-7721.2014.02.000
On the Modes Features of Speciality Interval in the Major and Minor Modes
Abstract: The speciality interval is a concept defined to distinguish the harmonic modes and melodic modes, both of them with the altered intervals as the elements, different from natural modes in the system of major and minor modes. The necessary condition to produce speciality interval is the presence of the speciality step. However, it should not be all of the so-called speciality intervals that combined the speciality step with the all of the natural steps in modes. And meanwhile, not all speciality intervals can be combined with natural steps to build up speciality intervals. From this point of view, the speciality interval is a kind of symbol with distinct mode characteristic. From the speciality step to speciality interval; and from speciality interval to speciality chord; then from the speciality chord to the speciality mode in the end, the speciality interval undoubtedly serves as an extremely important role during the process of “promotion” with this series of gradually changes. It also reflects the natural dependence relationship of speciality interval and speciality mode as “inextricably interwoven”.
Key Words: basic theory of music, major and minor modes, speciality interval