自然中频
Natural intermediate frequency
以上为机器翻译结果，长、整句建议使用 人工翻译 。
和声精巧、变化丰富，曲调变化之中频繁而适时的对位使得结构自然而有趣。
The texture is naturally of interest too, with the melody shifted from top to bottom, to middle, and frequent contrapuntal (two separate melody lines combined) bits added.
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