I was personally disappointed with the final boss's bgm when the raid launched. It tricks you into thinking its gonna be calling back to something like Rhapsodies of Vana'diel but then turns into just another loud tune. So I changed that!
Changes: Myths of the Realm - Wail of the Void (FFXI)
IMPORTANT!!! 1) DO NOT enable in same zone. This crashes the game. 2) Only load this mod in your default collection.
Known Issues: v1.0 - Looping times are a tiny bit off so playback isnt as clean as id hope for. Ill address this in the future once I have more free time. Despite VFXEditor being a savior for making this a lot simpler, the ability to place start and stop loops is infuriating since it automatically will change the time you input with the closest fixed bit.