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CometBeat Assets
Curated, rights-verified assets for the CometBeat music-education app —
SoundFonts, instruments, samples, and a large symbolic score corpus. Every
item is published with a per-item license + attribution in the catalog JSON.
What ships here (tiers)
Only Tier A and Tier B are published. Tier C (Share-Alike) and Tier D (Non-Commercial) are never in this dataset.
| Tier | Licences | Obligation |
|---|---|---|
| A | CC0 / Public Domain / MIT | none |
| B | CC BY 3.0 / 4.0 (attribution) | must credit the author — carried per item in attribution, shown in the app's "Sources & credits" |
| not published here | ||
| not published here |
Attribution (Tier B)
Each Tier-B item carries an attribution string (composer / editor / source).
Re-users must preserve it. Sources of the Tier-B content:
NIFC / The Fryderyk Chopin Institute (Polish scores + Chopin first editions,
CC BY), Mutopia Project (CC BY items), EGSet12, and CC-BY tracker modules.
Layout
catalog/index.json— the small index the app reads first (per-kind shards).catalog/{soundfont,instrument,sample,module,score}.json— per-kind shards; each item haslicense,attribution,tier(A/B),path.catalog.json— the full combined catalog.assets/…,gregobase/…,nifc/…,pdmx/…,mutopia/…, … — the payloads (score paths are md5-bucketed so no directory exceeds HF's 10k-files limit).
Content policy: symbolic music only (MIDI/MusicXML/kern/ABC/GABC/GP) + audio only as an instrument/sample payload (SFZ/SF2). Provenance is verified per source; the publish gate excludes Share-Alike, Non-Commercial, and unclear-licence material.
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