Prologue B

Prologue B is Disc 1, Track 3 on the Xenoblade Original Soundtrack, Disc 1, Track 3 on the Xenoblade Definitive Edition Original Soundtrack, and Disc 1, Track 3 on the Xenoblade Chronicles Original Soundtrack Trinity Box.

It plays during the prologue in Sword Valley after the first tutorial fight. It plays again 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.

The melody at 1:34 is based on a motif from Main Theme.