The track intro starts with percussion that builds up alongside the "Dalmasca Resistance" theme, then joined with strings and wind instruments. The climax is a clash of louder percussion, which abruptly ends with strings repeating the intro.
The track is one of numerous themes rearranged for the high-definition remaster Final Fantasy XII: The Zodiac Age, with new swells in the instrumentation and an overall crisper and clearer sound. There are differences in instrumentation and sound, as well as in the written music, notably the trumpets blows in the crescendo, which in the old version plays a syncopated figure, and updated version play tremolos instead.
The track is heard for the first time fighting against Air Cutter Remora during the Prologue's Nalbina Fortress mission, when playing as Reks.
The original soundtrack contain the track "Boss Battle -original- from FINAL FANTASY XII", which is the twentieth track on disc 2. The theme is unlocked after fighting against Gabranth, known as "Boss Battle" and is one of the three Final Fantasy XII tracks.
An arrangement of "Boss Battle" is included in this crossover between Final Fantasy and Dragon Quest for the PlayStation Portable. Its structure is nearly identical to the original version, but several tone changes are easily distinguishable.