Okay. I will go with the musical Edea's Parade Theme which is played in the Galbadia's Parade. Here's why:
Pleasant to the ears -> Only the player can here it and it may be quite pleasant to listen to.
But deadly to your health -> Hmmm, could be related to the fact that Edea is being controlled by Ultimecia. The Galbadia soldier and G. Garden student fear what will happen.
Only one window exists -> They can see that.....
Where it means salvation -> .....with the only salvation being Edea's death.
Am I right?
