Hyper speed mode:
     Press  Orange, Blue, Orange, Yellow, Orange, Blue, Orange, Yellow
at  the main menu. The frets will be moving faster. You can still save
your  game  when this code is enabled. Repeat this code to disable its
effect.

Performance mode:
     Press  Yellow,  Yellow,  Blue,  Yellow,  Yellow,  Orange, Yellow,
Yellow  at  the  main  menu.  Everything  disappears  except  for  the
performance.

Air guitar mode:
     Press Yellow, Yellow, Blue, Orange, Yellow, Blue at the main menu.

Eyeball head crowd:
     Press  Blue,  Orange, Yellow, Orange, Yellow, Orange, Blue at the
main menu.

Monkey head crowd:
     Press  Orange,  Blue, Yellow, Yellow, Orange, Blue, Yellow at the
main menu.

Flaming head:
     Press Orange, Yellow, Orange, Yellow, Orange, Yellow at the main 
menu.

Horse head:
     Press  Blue,  Orange, Orange, Blue, Orange, Orange, Blue, Orange,
Orange, Blue at the main menu.

Unlock everything (PAL):
     At  the  main  menu,  press Blue, Yellow, Orange, Orange, Yellow,
Blue, Yellow, Blue, Yellow, Blue, Yellow, Blue, Yellow, Blue, Yellow.

Horse Head (PAL):
     At  the  main  menu,  press  Blue,  Orange, Orange, Blue, Orange,
Orange,  Blue,  Orange,  Orange,  Blue,  Orange, Orange, Blue, Orange,
Orange, Blue, Orange.

Flaming Head (PAL):
     At  the  main menu, press Yellow, Yellow, Orange, Yellow, Orange,
Orange, Yellow, Orange.

Monkey Head Crowd (PAL):
     At  the  main  menu,  press Yellow, Yellow, Blue, Orange, Yellow,
Yellow, Blue, Orange.

No HUD mode (PAL):
     At  the  main menu, press Yellow, Yellow, Orange, Yellow, Yellow,
Blue, Yellow, Yellow.

Eyeball Head Crowd (PAL):
     At  the  main  menu,  press  Yellow,  Orange, Blue, Orange, Blue,
Orange, Yellow.

Air Guitar (PAL):
     At the main menu, press Blue, Yellow, Orange, Blue, Yellow, Yellow.

Hyper Speed (PAL):
     At  the  main  menu,  press Yellow, Orange, Blue, Orange, Yellow,
Orange, Blue, Orange.