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Gnome-speakernotes
"Mystery of the Millennium Kingdom" sample
(file)

"Mystery of the Millennium Kingdom" (千年王国の謎, Sen'nen Ōkoku no Nazo) is an instrumental composition from the Japanese Yu-Gi-Oh! anime. It is the 7th listed track on Yu-Gi-Oh! Duel Monsters Sound Duel Vol I.