Unlock the following songs by performing the corresponding tasks:

SONG - HOW TO UNLOCK
Super Samurai - jun: Play three songs on Expert and get at least a rank of "AA" on the third song in Free Play mode. Defeat the new challenger to unlock it.
tokyoEVOLVED - Naoki UNDERGROUND: First unlock all songs and then play three songs on Expert and get at least a rank of "AA" on the third song in Free Play mode. Defeat the new challenger to unlock it.