Music Library

Free and royalty-free background tracks, curated ahead of Assembly (stage 7) -- that's the stage that will actually mix a track under narration, so for now this is just search/import/tag.

Sources

SourceLicenseAttributionHow to add tracks
Freesound (live search, CC0) CC0 (filtered) Not required Live search below -- the only source here with a real free API
Pixabay Music Pixabay Content License Not required Download by hand, then upload below (no public music API, and their terms forbid automated bulk download)
YouTube Audio Library YouTube Audio Library license Not required Download by hand -- safest pick specifically for YouTube (Google whitelists its own library against Content ID)
Mixkit Mixkit Free License Not required Download by hand, then upload below
Incompetech (Kevin MacLeod) CC BY 4.0 Required -- credit line in video description Download by hand, then upload below with attribution text filled in
Bensound Bensound Free License (attribution) Required -- credit line in video description Download by hand, then upload below with attribution text filled in

Not wired up: Jamendo -- it has a real API too, but its free tier's own terms restrict it to non-commercial use, which a monetized channel doesn't qualify for.

Search Freesound (CC0, live)

FREESOUND_API_KEY isn't set -- get a free key at freesound.org/apiv2/apply and add it to .env.

Add a track you downloaded

Library (0)

No tracks yet -- search Freesound or upload one above.