"Samurai Story" — an absolutely stunning, calm piece of electronic music mixed with japanese influences. Great work by Shockshadow.
If someone knows where I can find free (traditional) japanese music similar to this (preferably featuring a shamisen), please let me know! I've been searching for quite a long time, but I seem to be unable to find much Creative Commons licensed music like this...
Another The Math-amphetamines song, but this one is a bit more melancholic and sounds more like a traditional folk song.
While this song can be found on Shira Kammen's "The Castle of the Holly King" album, she is definately not the one who sings in "The Wren in the Hurze" ;-) This is a great celtic song featuring fast, mind-boggling lyrics (think tongue-twister) and impressive percussions. I think a Bodhrán is used, but don't quote me on that.