Changsha Huagu Drama contains two quarter tones (having a variation inthe pitch of only half that between semitones), also called neutral tones,they are↑sol,↑re.
长沙花鼓戏音乐中有两个典型的中立音↑sol,↑re。
参考来源 - 长沙花鼓戏大筒伴奏中的“sol音现象”·2,447,543篇论文数据,部分数据来源于NoteExpress
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