The world’s largest shadow library—which is increasingly funded by AI developers—shocked the Internet this weekend by announcing it had “backed up Spotify” and started distributing 300 terabytes of metadata and music files in bulk torrents.
According to Anna’s Archive, the data grab represents more than 99 percent of listens on Spotify, making it “the largest publicly available music metadata database with 256 million tracks.” It’s also “the world’s first ‘preservation archive’ for music which is fully open,” with 86 million music files, the archive boasted.
The music files supposedly represent about 37 percent of songs available on Spotify as of July 2025. The scraped files were prioritized by popularity, with Anna’s Archive weeding out many songs that are never streamed or are of poor quality, such as AI-generated songs.
