I am in need of help with musical selections

I never thought I'd be back here but that is a different story for another time. But I do need your help Fakku.

I'm in need of a varity of selections of formal ball/gala like music, for a Formal Ball/Gall called The OMGBall that I am spearheading at the anime convention OMGCon in Paducha Kentucky in June. So I beseech thee for thy help.

I am looking for music along the lines of things like:
The Rocket Jump Waltz - Orange Box OST
Interrupted by Fireworks - FFVII OST
Always With Me - Spirited Away OST

These are just a few examples of what I've got at the moment and anything anyone can offer up as an idea would be greatly appreciated.

I'm not sure if you're just looking for formal sounding music from anime and video games or if anything formal sounding is okay. But here is some music that I think would fit the bill. I hope this helps. If you need more I think I might be able to find more.

March From Idomeneo, By: Mozart



Belleville, By: Django Reinhardt



The Jeeves And Wooster TV Theme



Terra's Theme (Orchestrated), By: Nobuo Uematsu



The Legend of Zelda Orchestrated Theme



Hohenfriedberger March, By: Fredrick the First of Prussia



Symphony 40 in G minor, By: Mozart



Overture to The Magic Flute, By: Mozart



Assassin's Creed 2 OST - Track 01 - Earth



Assassin's Creed 2 OST - Track 03 - Ezio's Family



Assassin's Creed 2 OST - Track 19 - Sanctuary



The Poirot TV Theme



Napoleon Total War Main Menu Soundtrack



Napoleon Total War Music - Campaign Map - Orchestra Part 2



Napoleon Total War Soundtrack - Campaign 01

Very related.

Everyone is sure to love this one.