Suggestion : Riding Demi-Ozma should play "Turmoil"

Don't get me wrong, the mount is very unique and a great reward for a great dungeon, but I would be lying if I said I didn't feel a bit disappointed that it just plays the stock flying mount theme.
Reminded me of whenever I finally got Fenrir, and it didn't play "The Warrens".

Alternatives to "Turmoil" could be "Gates of Paradise -The Garden of Ru'Hmet" which plays inside the Baldesion Arsenal, or "Onslaught" which plays during the other boss fights.
Even the Eureka theme would be a good alternative, although if you've beaten Proto-Ozma you've probably had your fill of that song.

You're getting your FF games mixed up that these were originally from, and no, they were not all from the same FF title - Ozma is the superboss from FFIX, where as those music tracks are all from FFXI (specifically it's Chains of Promathia expansion).

So it just doesn't make sense to have those tracks appear with it's mount version; a FFIX track would far more suitable - remember Ozma's first fanservice appearence in FFXIV was in The Weeping City of Mhach.

I know where Ozma is from, but the Demi-Ozma mount of FFXIV is clearly intended as a memento of the Baldesion Arsenal experience.
Whenever you mount it, you can see the Arsenal before it turns into Ozma proper, and also whenever you fly or dive underwater.

That being said, I would be more than happy with FFIX music, and it would obviously fit well.
Just anything but the default flying tune that plays for everything would be great.