Cheats

Boost mode:
     At the song selection screen, press Left, Right, Down, Up.

Extra Options:
     After  selecting a song at the selection screen, hold Start. This
can  also  be  performed by, selecting a song at the selection screen,
then holding Circle.

Groove Radar Values:
     Hold  Start  just  before  the  song selection screen appears. If
timed  right,  numbers will appear on the groove radar, indicating the
groove value of each song.