but you guys forgot kanon wakeshima.
YouTube - 02 Shinku no Fatalism
her songs are nice to listen to they are cool but also sweet and classical mixed with some other twist is absolutely awesome.
you should also try the shakugan no shana sound tracks
List of Shakugan no Shana albums - Wikipedia, the free encyclopedia
these songs have excitment in a sort of toned down way.some of them sound happy and joyful, but like Yoake Umarekuru Shōjo starts out sounding kinda creepy but then gets more exciting!
anyway,i rambled forgive me.but yeah,these are my suggestions.hope you like them