两个乐音之间的音高关系。用“度”表示。以简谱为例，从1到1，或从2到2都是一度，从1到3或2到4都是三度，从1到5是五度。
文章认为甘美兰音阶是对古老谐音类乐器音高关系的选择与应用；依据协和度定量计算公式论证构成甘美兰音阶基本音程值的协和性；
The writer proposed that the Ganmeilan musical scale was the result of choosing and application of the pitch relationship of the old harmonious kinds instruments;
音程，是音乐基础理论中的一个基本概念，近年来一些乐理书中对其中若干概念的称谓、定义、种类、性质等的解释有值得商榷之处。
Interval is a basic concept of the basic music theory. In recent years, the definition, classification and nature of some concepts in the music theory books are worth discussing.
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