Monster Surprised You

Monster Surprised You is Disc 2, Track 2 on the Xenoblade2 Original Soundtrack. It plays during battles at the end of certain sidequests, as well as the following battles, and often (but not always) in the cutscenes immediately prior:

Xenoblade Chronicles 2

 * The Megalo Aligo on the Ancient Ship.
 * on the Titan Battleship.
 * in Uraya.
 * The Elder Arachno in Uraya.
 * Menacing Jo, Cartbreaker Grzeg, and Benjamin the Brain in Gormott.
 * in Alba Cavanich.
 * in the Abandoned Factory.
 * Aeshma's power lines in Temperantia.
 * in Temperantia.
 * Addam's Phantasms in the Spirit Crucible Elpys.
 * The Deadfire Guldo in the Land of Morytha.
 * The Darkblood Guldos in the Land of Morytha.

Torna ~ The Golden Country

 * in Torigoth.
 * The in Aletta (for the first phase of the battle).