Boss Music

Boss Music is used numerous times in the Kingdom Hearts series to indicate that the current battle is with a boss. Most Boss Music is fast-paced and sends a theme of evil or tension. Usually the same song would be used in different boss battles to show the connection between them, e.g. "Shrouding Dark Cloud" is mostly associated with Heartless Bosses and "Squirming Evil" is used commonly for Disney Bosses in Kingdom Hearts.

Arabian Dream
Arabian Dream is introduced in Kingdom Hearts. It is the battle theme in Agrabah and is also used in a single boss battle.
 * Heard while fighting:
 * in Agrabah

The Deep End
The Deep End is a boss theme that plays throughout the game, in rather intense battles.
 * Heard while fighting:
 * Rock Titan in Olympus Coliseum
 * Ice Titan in Olympus Coliseum
 * Kurt Zisa in Agrabah
 * in Atlantica
 * in Hollow Bastion
 * (first battle) in End of the World

Destiny's Force
Destiny's Force, though commonly associated with fighting a Darkside, plays in a variety of occasions.


 * Heard while fighting:
 * Darkside in Destiny Islands, End of the World
 * Opposite Armor in Traverse Town
 * Jafar (Genie) in Agrabah
 * Parasite Cage (second battle) in Monstro
 * in Halloween Town
 * Phantom in Neverland
 * Behemoth in Hollow Bastion

Dive into the Heart -Destati-
Dive into the Heart -Destati-, a notable reorchestration of Destati, plays throughout Sora's Awakening, climaxing during the fight against a Darkside.
 * Heard while fighting:
 * Darkside in Awakening

Forze del Male
Forze del Male is a boss them associated with Ansem, Seeker of Darkness, as it plays in two fights against him.
 * Heard while fighting:
 * (second battle) in Hollow Bastion
 * (second battle) in End of the World

Guardando nel buio
Guardando nel buio, another notable reorchestration of Destati, plays while fighting the World of Chaos.
 * Heard while fighting:
 * in End of the World

Having a Wild Time
Having a Wild Time, while normally the battle theme of Deep Jungle, also plays during two boss battles.
 * Heard while fighting:
 * Sabor in Deep Jungle
 * in Deep Jungle

Night of Fate
Night of Fate, also the battle theme of Destiny Islands and Traverse Town (in the first visit), plays while battling Leon.
 * Heard while fighting:
 * in Traverse Town

A Night on the Bare Mountain
A Night on Bare Mountain, originally composed by Modest Mussorgsky, is rearranged as a boss theme for Chernabog.
 * Heard while fighting:
 * Chernabog in End of the World

One-Winged Angel (from FINAL FANTASY VII)
One-Winged Angel (from FINAL FANTASY VII), which originally played during the final battle against Safer Sephiroth, is rearranged for the fight against Sephiroth.
 * Heard while fighting:
 * in Olympus Coliseum

Scherzo di Notte
Scherzo di Notte, normally the battle theme of Hollow Bastion, plays during one boss battle as well.
 * Heard while fighting:
 * (first battle) in Hollow Bastion

Shrouding Dark Cloud
Shrouding Dark Cloud plays frequently, and is most commonly associated with Heartless battles.
 * Heard while fighting:
 * in Traverse Town
 * in Wonderland
 * (first battle) in Olympus Coliseum
 * in Agrabah
 * (first battle) in Monstro
 * in Neverland

Spooks of Halloween Town
Spooks of Halloween Town, normally the battle theme of Halloween Town, plays during a single boss battle as well.
 * Heard while fighting:
 * in Halloween Town

Squirming Evil
Squirming Evil is commonly associated with bosses from the Disney mythos.
 * Heard while fighting:
 * (first battle) in Olympus Coliseum
 * in Olympus Coliseum
 * (second battle) in Deep Jungle
 * in Agrabah
 * in Atlantica
 * in Halloween Town
 * in Neverland
 * in Hollow Bastion
 * in End of the World

To Our Surprise
To Our Surprise, besides being Wonderland's battle theme, plays during a single boss battle.
 * Heard while fighting:
 * in Wonderland

Disappeared
Disappeared is a haunting boss theme that plays during the battle against an unknown opponent.
 * Heard while fighting:
 * in Hollow Bastion

Face It!
Face It!, comprising primarily of cellos, an organ, and a timpani, plays during a select few boss battles.
 * Heard while fighting:
 * in Olympus Coliseum
 * in Atlantica (Reverse/Rebirth)

The Fight for My Friends
The Fight for My Friends plays frequently throughout the game during multiple boss encounters.
 * Heard while fighting:
 * in Olympus Coliseum
 * in Agrabah
 * in Halloween Town
 * in Atlantica (Sora's Story)
 * in Neverland
 * in Hollow Bastion

The Force in You
The Force in You is a boss theme associated with the Riku Replica, as it only plays during battles against him.
 * Heard while fighting:
 * in Castle Oblivion, Twilight Town

Graceful Assassin
Graceful Assassin, also Marluxia's title in Organization XIII, plays while Sora fights his illusion in the first of two battles against him.
 * Heard while fighting:
 * in Castle Oblivion

Revenge of Chaos
Revenge of Chaos, a brass-heavy song, plays during the final boss of Reverse/Rebirth against Ansem, Seeker of Darkness.
 * Heard while fighting:
 * in Castle Oblivion

Scythe of Petals
Scythe of Petals, referring to Marluxia's weapon, plays during the final battle against him.
 * Heard while fighting:
 * (Second Form) in Castle Oblivion

Struggle Away
Struggle Away, a recurring boss theme, plays in various battles in the recreated worlds Sora and Riku visit.
 * Heard while fighting:
 * Guard Armor in Traverse Town
 * Trickmaster in Wonderland
 * Parasite Cage in Monstro
 * Darkside in Destiny Islands

To Our Surprise
To Our Surprise, besides being Wonderland's battle theme, plays during a single boss battle.
 * Heard while fighting:
 * s in Wonderland

The 13th Struggle
The 13th Struggle is the boss theme associated with members of Organization XIII, playing solely during fights against them.
 * Heard while fighting:
 * in Castle Oblivion
 * in Castle Oblivion
 * in Castle Oblivion, Twilight Town
 * in Castle Oblivion
 * in Castle Oblivion

Go for It!
Go for It!, besides being Olympus Coliseum's battle theme, plays during a single boss battle.
 * Heard while fighting:
 * in Olympus Coliseum

Lord of the Castle
Lord of the Castle, a bold orchestral theme featuring a bold piano arpeggio, plays as the new final boss theme.
 * Heard while fighting:
 * (Third Form) in Castle Oblivion

The 13th Struggle
The 13th Struggle is the boss theme associated with members of Organization XIII, playing solely during fights against them.
 * Heard while fighting:
 * in Destiny Islands

The Corrupted
The Corrupted plays during a multitude of battles in Sora's second journeys to each world.
 * Heard while fighting:
 * Storm Rider in Land of Dragons
 * Grim Reaper (second battle) in Port Royal
 * The Experiment in Halloween Town
 * Groundshaker in The Pride Lands
 * Hostile Program in Space Paranoids

Dance to the Death
Dance to the Death plays during a select few bosses during the game.
 * Heard while fighting:
 * Possessor/Thresholder in Beast's Castle
 * Shadow Stalker in Beast's Castle
 * Prison Keeper and     in Halloween Town

Darkness of the Unknown
Darkness of the Unknown is comprised of three movements, each played during a different phase of the final boss battle.
 * Heard while fighting:
 * (second battle) in The World That Never Was
 * in The World That Never Was

Desire for All That Is Lost
Desire for All That Is Lost is a forlorn theme that places strong emphasis on a piano.
 * Heard while fighting:
 * Dark Thorn in Beast's Castle
 * Hydra in Olympus Coliseum
 * (3rd Battle) in Timeless River
 * Volcanic Lord and Blizzard Lord in Agrabah

Disappeared
Disappeared, a haunting battle theme, plays once again during a battle against Xemnas.
 * Heard while fighting:
 * in The World That Never Was

The Encounter
The Encounter is the theme most commonly associated with battles with Disney villains and enemies.
 * Heard while fighting:
 * in Olympus Coliseum
 * in Agrabah
 * in Halloween Town
 * in The Pride Lands
 * and the     in Space Paranoids

A Fight to the Death
A Fight to the Death plays during the battle against Xemnas in his Kingdom Hearts.
 * Heard while fighting:
 * in Fight to the Death
 * (first battle) in A Fight to the Death

One-Winged Angel
One-Winged Angel is a theme from Final Fantasy VII. It is used for Sephiroth's boss fight.
 * Heard while fighting:
 * in Radiant Garden

Rowdy Rumble
Rowdy Rumble, a fast-paced song, plays during a number of fast-paced boss battles.
 * Heard while fighting:
 * (first battle) in Olympus Coliseum
 * in Timeless River
 * (second battle) in Timeless River
 * in Halloween Town
 * in The Pride Lands

Sinister Shadows
Sinister Shadows, though most prominently played in the Battle of the 1000 Heartless, is also featured in certain boss battles.
 * Heard while fighting:
 * Grim Reaper (first battle) in Port Royal
 * in Space Paranoids

Tension Rising
Tension Rising is the theme normally used for battles with Heartless and Nobodies.
 * Heard while fighting:
 * Twilight Thorn in Awakening
 * in Beast's Castle
 * (first battle) in Underworld

Vim and Vigor
Vim and Vigor is a melancholy song that plays in a variety of battles.
 * Heard while fighting:
 * in The Land of Dragons
 * in Olympus Coliseum
 * and Illuminator in Port Royal

The 13th Dilemma
The 13th Dilemma is a theme also used for battles with the Organization.
 * Heard while fighting:
 * (second battle) in Hollow Bastion
 * in Beast's Castle
 * in The World That Never Was
 * in The World That Never Was

The 13th Struggle
The 13th Struggle is a theme associated with Organization XIII; in this game especially it is often associated with Axel, due to it being played in both his boss battles.
 * Heard while fighting:
 * in Simulated Twilight Town
 * in The World That Never Was

Darkness of the Unknown
Darkness of the Unknown is comprised of three movements, the last of which plays during the battle against the data replica of Xemnas.
 * Heard while fighting:
 * in Cavern of Remembrance

Disappeared
Disappeared, a haunting battle theme, plays once again during a battle against Xemnas.
 * Heard while fighting:
 * in Cavern of Remembrance

The Other Promise
The Other Promise is a rearrangement of Roxas, playing during his fight with Sora.
 * Heard while fighting:
 * in The World That Never Was
 * in Cavern of Remembrance

Rage Awakened
Rage Awakened is a bold theme, featuring a violin as its most prominent instrument.
 * Heard while fighting:
 * in Keyblade Graveyard

The 13th Dilemma
The 13th Dilemma is a theme also used for battles with the Organization.
 * Heard while fighting:
 * in Cavern of Remembrance
 * in Cavern of Remembrance
 * in Cavern of Remembrance
 * in Cavern of Remembrance

The 13th Reflection
The 13th Reflection is an eerily calm theme used for battles against the Organization members that were felled in Castle Oblivion.
 * Heard while fighting:
 * and     in Agrabah
 * in Twilight Town
 * in Olympus Coliseum
 * in Beast's Castle
 * in Port Royal
 * in Cavern of Remembrance
 * in Cavern of Remembrance
 * in Cavern of Remembrance
 * in Cavern of Remembrance
 * and     in Cavern of Remembrance

The 13th Struggle
The 13th Struggle is a theme associated with Organization XIII, prominently featuring an organ and a large brass section. <!--
 * Heard while fighting:
 * in Cavern of Remembrance
 * in Cavern of Remembrance

Twilight Town

 * [[Guardian}} in Tension Rising
 * [[Veil Lizard}} in Shrouding Dark Cloud
 * [[Tailbunker}} in Tension Rising
 * [[Darkside}} in Destiny's Force
 * [[Powered Armor}} in Tension Rising
 * [[Dustflier}} in Fight and Away
 * Xion: Final Form in Vector to the Heavens

Agrabah

 * [[Pete}} in Rowdy Rumble
 * [[Antlion}} in Shrouding Dark Cloud
 * Xion: Third Form in Fight and Away

Beast's Castle

 * [[Dark Follower}} in Destiny's Force
 * [[Infernal Engine}} in Vim and Vigor

Olympus Coliseum

 * [[Morning Star}} in Tension Rising
 * [[Xigbar}} in Rowdy Rumble
 * [[Guard Armor}} in Shrouding Dark Cloud

Wonderland

 * [[Lurk Lizard}} in Tension Rising
 * Crimson Pranksters in Fight and Away
 * Xion: First Form in Shrouding Dark Cloud

Neverland

 * [[Wavecrest}} in Tension Rising
 * [[Ruler of the Sky}} in Fight and Away

Halloween Town

 * in Spooks of Halloween Town
 * in Vim and Vigor
 * {{ns|Game|Xion]]: Second Form in Vim and Vigor

Castle That Never Was

 * in Critical Drive

The World That Never Was

 * in Another Side -Battle Ver.-

Land of Departure

 * in Terra
 * in Dark Impetus

Enchanted Dominion

 * in The Encounter
 * in The Encounter
 * in The Tumbling

Dwarf Woodlands

 * in Vim and Vigor
 * in Unforgettable

Castle of Dreams

 * in The Tumbling
 * in Rowdy Rumble
 * in Extreme Encounters

Radiant Garden

 * in Unforgettable
 * in Black Powder
 * {{ns|Game|Terra-Xehanort|Terra-Xehanort]] (Last Episode) in Dismiss
 * {{ns|Game|Vanitas}} in Enter the Darkness

Olympus Coliseum

 * in Destiny's Force
 * [[Zack}} in Shrouding Dark Cloud/Extreme Encounters

Deep Space

 * in Vim and Vigor
 * in The Encounter
 * in The Tumbling

Neverland

 * in Vim and Vigor
 * in The Encounter
 * in Enter the Darkness

Keyblade Graveyard

 * in Black Powder
 * in Black Powder
 * in Rage Awakened -The Origin-
 * in Another Side
 * in Enter the Darkness/Unbreakable Chains
 * in The Key
 * in Enter the Void

Realm of Darkness

 * in Hunter of the Dark

Mirage Arena

 * {{ns|Game|Iron Imprisoner]] I, II, III and IV in Unforgettable
 * {{ns|Game|Mimic Master}} in Unforgettable
 * {{ns|Game|Monster of the Deep|Monstro}} in Monstrous Monstro -Arena Ver.-
 * {{ns|Game|Armor of the Master}} in Master, Tell Me the Truth
 * {{ns|Game|No Heart}} in Forze dell'Oscurita

Destiny Islands

 * in Destiny Islands
 * in Destiny's Force

Traverse Town

 * in Shrouding Dark Cloud

Wonderland

 * in Tension Rising

Olympus Coliseum

 * in Go for It!
 * in Fight and Away
 * in Vim and Vigor
 * in Fight and Away
 * in Fight and Away
 * in Fight and Away

Agrabah

 * in Fight and Away
 * in Vim and Vigor

Hollow Bastion I

 * in Rowdy Rumble
 * in Riku

Hollow Bastion II

 * in Riku
 * in Vim and Vigor
 * in Destiny's Force
 * in Guardando nel buio

Castle Oblivion

 * in Forgotten Challenge
 * in Forgotten Challenge
 * in Roxas-->