The prologue of the game. It is only used in the first cutscene before the main menu.
Kicks in as soon as the game’s first cutscene starts, and also the #1 track of the album and the number 0 in the development track names, meaning it was meant to be the first thing to be heard in the game, after the beginning credits and initial settings (progressive scan screen).
It’s worth mentioning it is one of two songs marked with tildes (~) that are not ～巨像との戦い~ (~Battle with the Colossus~) and one of sixteen to have a title marked with tildes.
It starts with a fingered string instrument
Probably, the fact that this song and any instance of it is never repeated or cited througout the game until the very end indicates that the scenes we see at the beginning are somewhere separated from the actual game and the settings of it. It works as a introduction to this time and space Team Ico is presenting us before entering the Forbidden Lands and tells us that Wander comes from one place and is now going to another place. Most definitely that he is no longer going back, but we don’t know that yet.