Musical theory is the basic course of learning music.
乐理就是音乐理论，是学习音乐的基础课程。
Sightsinging teaching, as the basic theory of music, its importance has been embodied increasingly.
作为音乐基础理论的视唱教学，越来越体现出它的重要性。
Sightsinging teaching, as the basic theory of music, its importance has been embodied increasingly.
作为音乐基础理论的视唱教学，越来越体现出它的重要性。
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