Battle!!

Battle!! is Disc 1, Track 17 on the Xenoblade2 Original Soundtrack. It plays during standard battles in the following areas of the main game of Xenoblade Chronicles 2:
 * Argentum
 * Gormott
 * Uraya
 * Mor Ardain (except for the Abandoned Factory)
 * Leftheria (not including the Spirit Crucible Elpys)
 * Indol
 * Temperantia
 * Tantal

It also plays during the following story battles:
 * The King Crustip on Azurda's back.
 * The Lethal Lysaat King on the Ancient Ship.
 * The Wormeater Brog in Gormott.
 * Captain Padraig and the Ardainian Soldiers in Torigoth.
 * The Ardainian Soldier and Sergeant guarding Nia in the Titan Battleship.
 * The Rampaging Ardun in Uraya (when Rex learns to topple using Anchor Shot).
 * The Violent Driver in Fonsa Myma.
 * The Latollo Puffots in Gormott (owned by the children who stole Roc's core crystal).
 * The Tirkin Chefs in Indol.
 * The Tantalese Knights in Tantal's Hall of Mystery.