
Press L2, Square, Circle at the character selection menu in the European version. Then you can select Music team as Music mode. Once a dot lights, hold X until another dot lights, then alternate until all dots light up.
In race mode, pause and hold L1 + R1 and press Triangle. Yahouuuu: Quit to menu and complete event.Winiwiz: Quick movement (also automagic).
Aglagla: Switch to freeze shots in 2 player. (Technically only L1 + R1 are necessary to hold while pressing Circle to get the dots to appear, but since you have to hold L2 and R2 as well to light them, you might as well hold them to begin with.) In race mode, pause and hold L1 + L2 + R1 + R2 and press and hold, in order, Circle, Triangle, X, Square and wait for the 10 dots to turn yellow.