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README.md

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+# IMSLP MIDI Dataset (CC-BY-NC-SA-4.0)
+
+This dataset contains MIDI files and metadata crawled from IMSLP (International Music Score Library Project) on **July 21-22, 2024**.
+
+## Data Fields
+- `midi_source`: URL to the original MIDI file on IMSLP (incl. original uploader).
+- `metadata_source`: URL to the original metadata on IMSLP.
+- `file_name`, `title`, `composer`, `year`, `era`, `style`, `key`, `license`: Metadata fields.
+- `midi`: Raw MIDI bytes.
+- `midi_mido`: JSON-serialized mido object.
+
+## License Merging
+While most files in IMSLP are stored as public domain or open source, different and sometimes incompatible licensing agreements exacerbate the conflation of individual pieces into a single data collection.
+While there are several customized licenses for some of the MIDI files, some of the crawled and observed data were purely from the public domain globally, whereas the vast majority of all MIDI files make use of Creative Commons (CC) agreements. The latter may be combined under [specific circumstances](https://wiki.creativecommons.org/wiki/Wiki/cc_license_compatibility): 
+For example, CC-BY-licensed pieces may be remixed with CC-BY-SA- and CC-BY-NC-licensed pieces into a CC-BY-SA or CC-BY-NC remix, respectively. Furthermore, CC-BY-NC-licensed pieces or remixes may again be remixed using the CC-BY-NC-SA license. Finally, ShareAlike (SA) licenses CC-BY-SA and CC-BY-NC-SA of version 3.0 are [upgradable](https://creativecommons.org/share-your-work/licensing-considerations/compatible-licenses/) to those of version 4.0.
+Since the compatibility of all other, mostly custom licenses, remains ambiguous, they have been dropped.
+
+This specific dataset contains data that can be remixed as CC-BY-NC-SA-4.0.
+
+## How to Retrieve Origin Data and Authors
+- For each entry, use `midi_source` to find the original MIDI file and `metadata_source` for the metadata information.
+
+## Statistics & Visualizations
+
+- **Total entries:** 7586
+- **Unique composers:** 1388
+- **Unique works:** 7586
+- **Year range:** 1013.0 - 735.0
+- **Eras:** Romantic (2729), Baroque (1902), Renaissance (1319), Modern (944), Classical (463), Other (118), Early 20th century (94), Medieval (17)
+- **Styles:** Romantic (2736), Baroque (2033), Renaissance (1368), Modern (720), Classical (462), Early 20th century (184), Traditional (35), Medieval (22), Jazz (15), Ancient (8), Non-western classical (3)
+
+![Top 10 Composers](readme_plots/by-nc-sa_top_composers.png)
+
+![Era Distribution](readme_plots/by-nc-sa_era.png)
+
+![Style Distribution](readme_plots/by-nc-sa_style.png)
+
+![Year Distribution](readme_plots/by-nc-sa_year.png)
+
+
+
+## How to Use
+```python
+from datasets import load_dataset
+dataset = load_dataset('TiMauzi/imslp-midi-by-nc-sa')
+```
+
+In case of any copyright issues or concerns, feel free to contact me, so I can take this model offline.