Ancient Mysteries

Ancient Mysteries is Disc 1, Track 11 on the Xenoblade Original Soundtrack. It plays during these cutscenes:
 * Shulk, Reyn and Fiora reach Mag Mell Ruins in Tephra Cave
 * The party discussing further actions after Metal Face retreats from the Freight Road in Colony 6
 * Melia talking to her ancestor in the Ceremony Hall in the High Entia Tomb
 * During Shulk's audience with Emperor Sorean after returning from the High Entia Tomb
 * The party entering Ose Tower on Valak Mountain
 * Meyneth retelling the history of the Machina in the Data Centre in Agniratha