这些歌曲大多采用和声小调，并在较小的时空中实现多次转调和离调，使音乐具有一定的幻想性，也加强了音乐的对比。
These songs mostly adopt symphonic minor and actualize many inflexion and transition in a comparatively small space-time , which makes the music fantastic and enhances the contrast of music .
和声小调