Ask HN-style: where to find legally usable datasets for advanced chord recognition?
DiscoramaMusic · reddit · 2026-09-03
A developer is building an audio chord-recognition engine targeting not basic major/minor chords but dense harmony: jazz, soul, funk, Brazilian and film music (maj9, m11, altered dominants, slash chords, etc.).
The core pain: public datasets have simplified labels, weak annotations, and don't cover sophisticated harmony, with no time-aligned audio or beat info. They ask which open or licensable datasets are legally usable, whether sources like iReal Pro, Hooktheory, or Chordify are viable, and roughly how many hand-annotated tracks a serious model would need.
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