Update README.md

README.md

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-license: mit
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+---
+license: mit
+---
+
+# Beijing-Opera
+
+This is an audio classification dataset for **Instrument Classification**.
+
+**Classes = 4**<br>
+**Split = Five-Fold** 
+
+
+
+## Acknowledgment
+This dataset is a slightly processed version of data originally created by [Source](https://compmusic.upf.edu/bo-perc-dataset).
+Please refer to the respective source for their licensing details and any additional information.
+
+## Structure
+- `audios` folder contains audio files.
+- `csv_files` folder contains CSV files for five-fold cross-validation.
+- To perform cross-validation on fold 1, `train_1.csv` will be used for the training split and `test_1.csv` for the testing split, with the same pattern followed for the other folds.
+
+
+## Contact
+For questions or feedback, please create an issue.
+