Prologue B

Prologue B is Disc 1, Track 3 on the Xenoblade Original Soundtrack. The melody at 1:34 is based on a motif from Main Theme. It plays during the prologue in Sword Valley after the first tutorial fight. It plays once more late in the game when the Telethia attack Colony 6, in the cutscene where Shulk joins the fight.

It also plays in Xenoblade Chronicles: Future Connected when Tyrea holds off the Fogbeasts in front of Gran Dell.