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Anna's Archive backed up Spotify. They got 99.9% of metadata, and 300TB of music representing 86 million tracks - original 160kbps OGG for tracks with popularity>0, and re-encoded 75kbps for popularity=0. absolutely wild project.
the metadata in particular is a hugely useful data source. MusicBrainz catalogues 5 million unique ISRCs (like ISBNs but for music releases), whereas this archive has a whopping 186 million.
this solves a major problem I ran into when writing automation tools for maintaining my own music library: the metadata sources are missing so much stuff, so you generally end up needing to query the Spotify API, which isn't sustainable. even with it inherently being a snapshot in time, archived metadata solves a ton of headaches.
this massively escaped containment so imma mute now
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