Yay, I am glad you made this thread because I have several instrumentals I want to share. You are quite right too he is indeed a genious. His music sounds absolutely wonderful. I have a few of his songs on my computer actually. I believe Lia Peng Fang did "Dream of Autumn" as well.
Now I shall share some of mine.
My current favourite is Rin. I happened on this music while browsing songs for the "Fearless" soundtrack.
Innocence:
http://www.youtube.com/watch?v=2-9CnV_cLsE
What the Rain Said:
http://www.youtube.com/watch?v=uqDj3vFf-hA
Sakura Sakura:
http://www.youtube.com/watch?v=n50iiHQgh7c
I love instrumental music and tend to prefer them over lyrical pieces because I can simply enjoy the melody.