Adding loader for Vienna 4x22 Piano Corpus

[anusfoil]

Summary

• Adds a loader for the Vienna 4x22 Piano Corpus: 88 piano performances (4 pieces × 22 pianists), recorded on a Bösendorfer SE290 reproducing piano
• Backed by partitura (optional dep mirdata[vienna4x22]) for parsing MusicXML scores, performance MIDIs, and .match score-to-performance alignment files
• Index hosted on Zenodo: https://zenodo.org/records/21160492

Checklist

• Loader (mirdata/datasets/vienna4x22.py) with Track, load_score, load_performance, load_match
• Full 88-track index (vienna4x22_index_1.0.json) on Zenodo; sample index for tests
• Test resources (1 track: Chopin op.10 no.3, pianist 01)
• Tests (tests/datasets/test_vienna4x22.py) — all passing
• Index generation script (scripts/make_vienna4x22_index.py)
• pyproject.toml optional dep vienna4x22 = ["partitura>=1.7.0"]
• CI environment (environment-ci.yml) updated with partitura
• Docs: autodoc_mock_imports, mirdata.rst, table.rst

🤖 Generated with Claude Code

[yujin-kimmm]

Hi @anusfoil , thanks for this PR!

This dataset looks good and I left some comments. Please let me know if you have questions.

[codecov]

Codecov Report

❌ Patch coverage is 95.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 97.20%. Comparing base (11e11d5) to head (7285c50).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #707      +/-   ##
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- Coverage   97.22%   97.20%   -0.02%     
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  Files          71       72       +1     
  Lines        7845     7905      +60     
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+ Hits         7627     7684      +57     
- Misses        218      221       +3     

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[anusfoil]

Thanks for the review @yujin-kimmm ! I've addressed all comments:

• Fixed the Zenodo URL (wrong file was uploaded in v1; v2 now has the correct index JSON)
• Added midi: ✅ and updated the annotations description in table.rst
• Removed the parangonar reference from the alignment_quality docstring

[yujin-kimmm]

@anusfoil Thank you! I have one last question. I just found the audio files of this dataset from the link in the repo, and I was wondering if the reason why audio is not in this loader is because the audio files and the symbolic data is not related each other? or from different institution?

[anusfoil]

@anusfoil Thank you! I have one last question. I just found the audio files of this dataset from the link in the repo, and I was wondering if the reason why audio is not in this loader is because the audio files and the symbolic data is not related each other? or from different institution?

Thanks for the reminder Yujin! I was in symbolic for too long that I totally forgot this one has audio.... it's perfectly corresponded haha, I have just amend the PR to add it.

[yujin-kimmm]

@anusfoil Thanks for adding the audio! I just added a checksum for audio zip file in b93c5df, so please check it.

Other than that, looks good to me!