These songs are unlocked for the Chaos section of the Challenge series. Each track has its own special difficulty score and are unlocked by gathering Rhythmia.

Unlockable	How to unlock
Battle 1 (FFIV) (BMS)	30000 points.
Dungeon of the Giants (FFIV) (FMS)	32500 points.
J-E-N-O-V-A (FFVII) (BMS)	40000 points.
Mambo de Chocobo (FFV) (FMS)	37500 points.
Mt Gulg (FFI) (FMS)	27500 points.
Something to Protect (FFIX) (FMS)	45000 points.
The Fierce Battle (FFVI) (BMS)	35000 points.
The Last Day (FFVII) (FMS)	42500 points.