Oh, ayumisrael, if you don't mind, I'd recommend you these songs:
everyhome
LITTLE BEAT RIFLE (the single ver., found on infection single as well.)
MAGICAL WORLD
BORDERLINE
Shadow
X
Shine (album version)
Bokura Barairo no Hibi
NOW
Ryuuseigun
Gekkou
Sodatsu Zassou
Rainman (single ver.)
Hotaru
You should definitely try these out