We backed up Spotify (metadata and music files). It’s distributed in bulk torrents (~300TB). It’s the world’s first “preservation archive” for music which is fully open (meaning it can easily be mirrored by anyone with enough disk space), with 86 million music files, representing around 99.6% of listens.

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Anna's Archive created a comprehensive backup of Spotify containing 256 million track metadata entries and 86 million music files (~300TB), representing 99.6% of listens. The archive uses torrents for distribution, prioritizes tracks by popularity, stores files in OGG Vorbis (160kbit/s for popular tracks) and OGG Opus (75kbit/s for unpopular tracks), and includes the world's largest publicly available music metadata database with 186 million unique ISRCs. The metadata is structured in SQLite databases covering artists, albums, tracks, playlists, audio features, and file information, making it the first fully open music preservation archive that can be easily mirrored.

Backing up Spotify