The koto is one of Japan's most beautiful instruments.
Click on this link to get the a virtual koto, and try playing the koto for yourself: http://genkienglish.net/genkijapan/koto.htm
And the shamisen is a traditional stringed instrument that creates a beautiful and unique Japanese sound - try out this virtual shamisen http://theshamisen.com/virtualshamisen.php
And of course - my favourite - taiko!! Check out the Youtube clip below of an amazing Japanese Taiko group and also, try out this virtual taiko - you need to use the number keys to beat the drum http://users.design.ucla.edu/~sgao/151e/work/graphicdesign/taiko.htm
がんばりましょう