Now I'll show you that touhou isn't just a game (which makes lots of fun), but also that there are big circles which make doujins and Musik.
Mostly they sell there stuff at the Comiket (a big convention in Tokyo).
But now here are some videos from IOSYS (one of the best circles imho):
Also: Did you know you can shorten your Youtube links?
http://youtu.be/8XrGO6vsFPQ for example or http://youtu.be/KKsvXrQ5ico,
You can find this under the "Share" button in Youtube or use the video-ID (watch?v=<this here>)