Sound Test (Japanese version)
At the title screen, hold A + B on controller 2 and press Start on controller 1. Use controller 1 to hear the music and controller 2 to hear the sound effects.
Sound Test (US Version)
From the title screen, go to the PLAY menu, press A + B on Controller 2, then press Start on Controller 1 to access the sound test. Use Controller 1 to select the music and Controller 2 to listen.
Regular Season Passwords...