How do you unlock level select in Sonic Spinball

How to get level select in Sonic Spinball in Sonic Mega Collection for the Gamecube:
Go to options and press these buttons in order: B, DOWN, A, DOWN, X, DOWN, B, A, UP, B, X, UP, A, X, UP. You will hear a fanfare meaning you done the code correctly.
Exit options and go back to the title screen. Hold B and press start to go to the 2nd level: Lava Powerhouse, hold A to go to the 3rd level: The Machine, and hold X and press start to go to the 4th level (final level): Showdown.