1.)
Septette for the Dead Princess
BEST!!! Holy shit I don't even know where to start. Listening to this always gives me the goosebumps for some reason, probably because, in my opinion, it suits Remilia so goddamned well that it's creepy. The music's pace isn't fast, just majestically graceful, and the melody sound so dignified; like each being a distinct individual beat from each other; perfectly representing a character like Remilia.
2.)
Wind God Girl
Just like Aya! FAST AND LIVELY! Originally this was my fave theme, until Septette, but until now it just doesn't refuse to leave my top 5. The liveliness of it all, the jumping, steroidic rhythm, it's a must-listen in my opinion. I'm just the type of person who likes getting goosebumps on anything I listen to~ Better if I'm shaking my head in rhythm at the same time~
3.)
Broken Moon
Ah, Suika's theme, and the theme I enjoy most while driving to school in the morning. It's both lively, fitting for the midget oni, and leisurely-paced, a perfect theme to start off the day. In fact this was the first theme I looked up in Youtube, since, like I said in my introduction, I started on Touhou with IaMP.
4.)
Legendary Illusion ~ Infinite Being
Shinki's theme; the best theme of the PC-98 series IMO, by original standards. While I don't have any real opinion on whether or not this suits Shiki because the theme itself is pretty random (that may describe Shinki perhaps?) I still do remember the time when I first heard this theme and listened to it over and over again while playing Call of Duty 5
5.)
U.N. Owen Was Her
Probably the most famous Touhou theme there is; so popular that it currently has the most recompositions of all the other themes. It's an insane theme - perfect for the insane Flandre