The Towering Yggdrasil

The Towering Yggdrasil is Disc 2, Track 6 on the Xenoblade2 Original Soundtrack. It plays in the following cutscenes:
 * The party steps out onto Outlook Knoll to take in the view of Gormott.
 * The party approaches the World Tree in Umon’s boat.
 * Fan la Norne's ship arrives at Leftheria.
 * Genbu breaches at Pandoria’s behest, to allow the party to dock.

The melody 47 seconds in uses a motif from Xenoblade II - Where It All Began -.