Star Ocean: The Second Story Cheats

After reaching the final save point before Indalecio in Fienal, leave and go to Fun City. At the northern end of the arena is an old man. Talk to him, and you can ask him to send you ''into your memories''. Doing so will return you to Arlia in Expel. Leave Arlia to find a Synard. You can now fly to and enter the secret dungeon on the desert island to the southwest of the map.

Once you beat the Cave of Trials Bonus dungeon's final boss, you'll get the Silver Trumpet instrument. Compose with the Silver Trumpet until you get it's second song, The Evil Melody, and play it with a character that has the Pitch and Sense of Rhythm Talents and a level 10 with the Musical Instrument. Make sure you're in an area where random battles can take place and once you've successfully played the song and leave the menu, you'll enter battle. Good luck because Iselia is tough!