Go to the title screen and press Down, Right, Up, Left, Left, Up, Right, Down.
During gameplay press Right, Left, Left, Right, Up
During Gameplay press Left, Right, Right, Left, Up
During Gameplay press Left, Right, Left, Right, Down
During Gameplay press Left, Right, Left, Right, Up
During Gameplay press Right, Left, Right, Left, Up
During Gameplay press Left, Right, Right, Left, Down
Get No Lattice graphics
During Gameplay press Down, Up, Down, Up, Right, Left, Left, Right
Get Blurry graphics
During Gameplay press Down, Up, up, Down, Down, Up, Up, Down
Get Gem graphics
During Gameplay press Up, Down, Up, Down, Left, Right, Right, Left
Get Elixia song from Efishant
First pause the game then press Up, Down, Left, Right, Left. Finish the current song and go to the remix screen to see the Elixia song
Get Practice mode
Go to the solo game menu and press Up, Down, Left, Right, X, X, X
Get Listen Mode
Go to the solo game menu and press L1, R1, R2, Select
Finish the game using the expert difficulty setting to get the Luge Crash song. Finish that song and you get the secret song End of Your World
Super Secret Song
In order to unlock the super secret song you must first beat the secret song.
Unlock songs the easy way
To easily unlock new songs, first input the enable cheats code (at title screen, press down, right, up, left, left, up, right, down. You'll hear a sound if entered correctly). Select a song on any difficulty. During the song, get a multiplier (when playing, press right, left, left, right, up) and activate it immediately. Then, autocatch all the tracks (press left, right, right, left, up during gameplay). When you enter the next section, get another multiplier, activate it, and autocatch all the songs again. Repeat this process until you when the songs. Keep your multiplier activated and you should get a high enough score to unlock all the bonus songs for each stage.