| Discogs: | https://www.discogs.com/master/52094 [info]
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| lyrics page: | https://genius.com/albums/Dream-theater/Systematic-chaos [info]
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| other databases: | https://rateyourmusic.com/release/album/dream-theater/systematic-chaos/ [info]
https://www.metalmusicarchives.com/album/dream-theater/systematic-chaos [info]
https://www.musik-sammler.de/album/9281/ [info]
https://www.progarchives.com/album.asp?id=14932 [info]
https://www.spirit-of-metal.com/en/album/Systematic_Chaos/53155 [info]
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| Allmusic: | https://www.allmusic.com/album/mw0000585093 [info]
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| Wikidata: | Q826828 [info]
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