突破单一调性而扩大调或调式的接触面,是音乐求得新的开展变化、推动乐思发展的重要手段。在多声部音乐中,调性的变化发展形式比单声部音乐中的更为多样,因为它们不仅可从横向方面以先后的方式表现出来,而且也可在纵向上由各声部作同时的结合而呈现出来。在我国各民族的多声部民歌中,可以看到种种调发展的现象:有突出调式变化的,也有突出调高低变化的;调性布局上,有突出力度性的,也有突出色彩性的。接触不同的调性或采用不同的调发展手法,都会产生不同的效果差异,结 Breaking a single tone and expanding the tone or tone of the contact surface, is to find new music to change, promote the development of music an important means. In polyphonic music, tonality changes and evolves more differently than monophonic music, because not only can they be displayed in a sequential manner from a lateral perspective, but they can also be made vertically and simultaneously by the voices The combination of the show. In the multi-voices folk songs of various nationalities in our country, we can see the phenomenon of various kinds of development: there are prominent changes in tune, but also highlight the changes in low and high; tonal layout, there are prominent efforts, but also highlight the color. Contact with different tone or use different tone development practices, will produce different effects, the knot