What good sad Len songs/touching are there?

I'm a total sucker for emotional songs and I 사랑 Len's. But I can't find too many of those kind of songs. Anyone have any suggestions? And just so 당신 don't give songs I already know, here's list of those I know and like.
-Servant of Evil
-Re_Birthday
-Kokoro.Kiseki
-Love is war(Not too sad though...)
-Falling Falling Snow
-Prisoner
-New Millennium
(Last two not really sad 또는 too my liking...)