Getting Final Heaven in Pc version

[IceT]

Could someone give me the PC keystrokes to play the piano to get Final Heaven?

I know the ps ones but I don't know if 'Circle' is 'MENU' 'CANCEL' SWITCH' or whatever and idem with Square and Triangle

[Sephitachi7]

Triangle - MENU
Circle - OK
X - CANCEL
Square - (Maybe SWITCH)