
- "When standing at the edge of the abyss, we all want to investigate once."
- — Michiru Yamane's comments on the Sound Select
Prologue to the Black Abyss (otherwise known as Prelude to the Black Abyss) is a music theme composed by Michiru Yamane for Castlevania: Lament of Innocence. It is the ambient theme that plays at the Castle Entrance.