here are some cool youtubes(:
(all piano versions) xD

Drivin' by Dj naoki feat. paula terry
http://www.youtube.com/watch?v=5nZ6iefWTq4

DoLL by TЁЯRA
http://www.youtube.com/watch?v=nXhM5Lh4P8c

Xepher by Tatsh
http://www.youtube.com/watch?v=A31BhZ3F2sE
note : xepher stands for this -
X

Expertise, End, Everlasting
Punishment, Prayer, Pain
Hocuspocus, Hesistance, Horrible
Ecstacy, Existance, Everything
Reality, Regret, Recurrance

Kakumei by Dj Taka with Naoki (this is the real version of Kakumei, the ddr song. it's called the Revolutionary Etude by Chopin. )
http://www.youtube.com/watch?v=4cL9T_OrhjU