I'm just gonna scan my ipod and see what strikes me as "ballroom-y"
some suggestions. the * ones are the ones I really want to hear played at the ball.
waltz:
*chihiro no waltz
howl's moving castle theme
Bolero (Tohoshinki) (faster so probably for a viennese waltz)
Masquerade (Phantom of the Opera) (6/8 time I think, not sure)
other various Jazz Waltzes
salsa/other latin:
Valenti (BoA (i've found that most of BoA's faster songs, like Peace B;ID among others, are good for this genre))
Magnet (vocaloids)
Save the Last Dance for Me (Michael Buble)
slow 4/4: (basically any ballad-y, slow song should in theory work)
Kiss me Goodbye (Angela Aki)
*Fly Me to the Moon (Frank Sinatra (lots of jazz-y songs will fit into this category actually)
Find the Way (Nakashima Mika)
http://www.youtube.com/watch?v=nMcBMlA9 ... re=related can you play this in the beginning? it's Vocaloid's Alice in Music Land (super cute and relates to the Wonderland theme)
Home (Angela Aki)
Xia Xue ("Summer Snow") (Fahrenheit)
fast 4/4:
Where or When (Fran Sinatra)
Jive:
Shy Boy (Secret (that's the name of the group)
Wish (Arashi)
Ev'rybody Wants to be Cat (Aristocats OST (disney))