In A Dark Slumber...

In A Dark Slumber... (called Dark Slumber on the Revival disc, sometimes unofficially referred to as In a Dark Sleep......) is Disc 1, Track 20 on the Xenogears Original Soundtrack and track 21 on the Xenogears Original Soundtrack Revival Disc -the first and the last-. The melody is based on a motif from Faraway Promise.

It plays as the 'Game Over' jingle, and when the player loses the Xenogears card game. It also plays when the Yggdrasil retreats from Bledavik after the unsuccessful invasion attempt, and in the fake-out cutscene if Citan attempts to take Fei's bomb collar off in Nortune.