最終更新日：2024/08/01
The C-clef is used to indicate the position of middle C on the staff.
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The C-clef is used to indicate the position of middle C on the staff.
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The C-clef is used to indicate the position of middle C on the staff.
The C-clef is used to indicate the position of middle C on the staff.
DiQt（ディクト）
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