==CODES==

-Stage Select & Sound Test & Visual Test-
At the title screen
+-------------------+------------------------------------------------------------------------+
| Effect            | Code                                                                   |
+-------------------+------------------------------------------------------------------------+
| Sound Test        | Hold L&R left down right down left up right down left down right up    |
|                   | down down up down right down left right down right down left right     |
|                   | down right                                                             |
| Stage Select      | left down right down left right down A left down right up right right  |
|                   | down right right                                                       |
| Visual Scene Test | down up down left down right down left down right up A L               |
+-------------------+------------------------------------------------------------------------+