《隋书·列传·卷三》
但世有沿革，取舍不同。到了北周武帝，又改为用七音，以林钟为宫。
然世有沿革，用舍不同，至周武帝，复改悬七，以林钟为宫。
However, as time moved on, different choices were made. In the Northern Zhou Dynasty, Emperor Wu changed it back to seven notes and used Linzhong as the main note.
<s>[INST] Render the following Classical Chinese text into fluent English: 然世有沿革，用舍不同，至周武帝，复改悬七，以林钟为宫。 [/INST] However, as time moved on, different choices were made. In the Northern Zhou Dynasty, Emperor Wu changed it back to seven notes and used Linzhong as the main note.</s>
Render the following Classical Chinese text into fluent English: 然世有沿革，用舍不同，至周武帝，复改悬七，以林钟为宫。
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However, as time moved on, different choices were made. In the Northern Zhou Dynasty, Emperor Wu changed it back to seven notes and used Linzhong as the main note.
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