Ugh,
Characters-Luigi. (Yep, only unlockable character.)
Modes-Story Mode EX
Songs From Story Mode EX
Choir on the Green
Piroli
Pipe Pop
Step by Step
Midnight Drive
Hop Mario!
Where's the Exit?
Other 18 songs are unlocked from completing story mode. (Regular)
Unlockable Difficulties
Hard-Beat Normal
Very Hard-Beat Hard
Super Hard-Beat Very Hard without losing a song even ONCE.
Unlockable Mini-Games
Whee!
Coin Collection
Flight off S.S. Brass.