Walking with You

Walking With You is Disc 5, Track 6 on the Xenoblade2 Original Soundtrack. It is an orchestral version of Desolation. It plays in the following cutscenes of the main game of Xenoblade Chronicles 2:
 * Malos lands the final blow against Vandham at the Olethro Ruins.
 * Rex mourns over the death of Fan la Norne in Temperantia.
 * Rex and the party confront Jin and Malos at the Cliffs of Morytha.
 * Jin eats Lora's heart, becoming a Flesh Eater (flashback).
 * Mikhail urges the party to chase after Jin and Malos at the World Tree.
 * Jin kills Amalthus, leading to him losing his own life.
 * Malos tells the party of Jin's pain and how he views himself as a "hideous monster, far beyond saving".
 * Pneuma tells Poppi and Azurda what she wanted her open-ended promise to be.

It also plays in Xenoblade Chronicles 2: Torna ~ The Golden Country, when Mythra loses control and destroys Malos and the Tornan Titan.