Sonic Chronicles: The Dark Brotherhood/Hidden content

Musical remixes

Many of the Sonic Chronicles: The Dark Brotherhood tracks are in fact remixes of earlier Sonic background musics:

Track	Remix of	Remixed track
Green Hill Zone	N/A, new composition	N/A
Central City	Diamond Dust Zone (Act 1, MegaDrive version)	N/A
Mystic Ruins	Final Fight (MegaDrive version)	N/A
Blue Ridge Zone	Diamond Dust Zone (Act 2, Saturn version)	N/A
Metropolis	Panic Puppet Zone (Act 1, Saturn version)	N/A
Angel Island	Collision Chaos (Bad Future, Japanese)	N/A
Metropolis Ground Zero	Tidal Tempest (Past, Japanese)	N/A
Kron Colony	Volcano Valley Zone (Act 1, Saturn version)	N/A
N'rrgal Colony	Quartz Quadrant (Good Future, US)	N/A
Zoah Colony	N/A, new composition	N/A
Voxai Colony Alpha	N/A, new composition	N/A
Voxai Colony Beta	Title Music (Sonic Chronicles: The Dark Brotherhood)	N/A
Nocturne	Great Eggman Robo	N/A
Battle Theme 1	Tidal Tempest (Past, Japanese)	N/A
Battle Theme 2	N/A, new composition	N/A
Battle Theme 3	N/A, new composition	N/A
Battle Theme 4	Sonic Chronicles Intro	N/A
Miniboss theme	N/A, new composition	N/A
Boss theme	Panic Puppet Zone (Act 1, Saturn version)	N/A
Ix's boss theme	N/A, new composition	N/A

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Unused dialogue

Sonic Chronicles contains some unused dialogue within its data. Though who would have spoken this line is unknown, the text reads,"Ha ha ha ha ha! Holy crap! I'm a disembodied voice!"