Update README.md

README.md

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   - split: train
     path: data/train-*
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+
+# Million Song Subset (Processed Version)
+
+## Overview
+This dataset is a structured extraction of the [Million Song Subset](http://millionsongdataset.com/pages/getting-dataset/#subset), derived from HDF5 files into a tabular format for easier accessibility and analysis.
+
+## Source
+- Original dataset: **Million Song Dataset** (LabROSA, Columbia University & The Echo Nest)
+- Subset used: **Million Song Subset** (10,000 songs)
+- URL: [http://millionsongdataset.com](http://millionsongdataset.com)
+
+## Processing Steps
+1. **Extraction**: Used `hdf5_getters.py` to retrieve all available fields.
+2. **Parallel Processing**: Optimized extraction with `ProcessPoolExecutor` for speed.
+3. **Conversion**: Structured into a Pandas DataFrame.
+4. **Storage**: Saved as a Parquet file for efficient usage.
+
+## Format
+- **Columns**: Contains all available attributes from the original dataset, including artist metadata, song features, and audio analysis.
+- **File Format**: Parquet (optimized for efficient querying & storage).
+
+## Usage
+- Load the dataset with Pandas:
+  ```python
+  import pandas as pd
+  df = pd.read_parquet("hf://trojblue/million-song-subset")
+  ```
+- Explore and analyze various musical attributes easily.
+
+## License
+- **Original License**: Refer to the [Million Song Dataset license](http://millionsongdataset.com/pages/terms-of-use/)
+- **Processed Version**: Shared for research and non-commercial purposes.
+
+For more details, visit the [Million Song Dataset website](http://millionsongdataset.com).
+
+