There's little polarization on the issue of Ikaruga having an awesome soundtrack.
- Ideal
and if you're good enough (or creditfeed), you'll get this lovely arrangement for your battle with the final boss. - The Default Boss Music, Butsutekkai is perhaps the most well-known song from the game for good reason: its fast-paced tone gives off an awesome thrill to the intense battle against the boss itself.
- Stage 2 - Trial and its Boss Theme, Recapture. The former syncs perfectly well with the intro where the Player Characters battle above what appears to be a city before descending to one of Hourai's bases. The latter may not be as loved as Butsutekkai, but its distinct tone and pace makes the boss theme stand out.
- Faith, the tune to the game's third stage. The multiple "instruments" are layered over each other perfectly, and timed perfectly, to create a truly epic accompaniment to the game's jump from merely tricky to score well on to an ordeal for the mightiest of gamers.
- Even the theme to Reality is awesome. The slow-paced yet epic tone perfectly reflects Misago's massive size and firepower while our hero(es) fly around the floating fortress to fight it on different angles.
- The Penultimate Theme - Metempsychosis, which heralds the final chapter of the game, is a dramatic and almost triumphant theme that plays as the player character(s) dive into the area where the final boss awaits. Several sections of the song in the soundtrack version are the sub-themes of the various phases of the approach to the final boss, with the player fighting a defensive system after dispatching the last wave of enemies, destroying its heads one by one, then finally confronting the last boss.
- Stone-Like, the True Final Boss theme that plays after you defeat the villain in the final chapter, still has echoes of Metempsychosis in it as the True Final Boss rises out of the ruins of the final boss as it crumbles. From here, the theme serenades you with its powerful horns, as you endure a final storm of bullets in increasingly intricate patterns, and all the while, a deep thumping hearbeat underscores the entire track, completing the connection to Treasure's previous game, Radiant Silvergun.
