I can immediately name nearly all of her post-I am... material (save Liar, Hope or Pain, and that other ballad right next to those two that sounds exactly the same to me...). It's the pre-RAINBOW stuff I get mixed up. >_< I don't really like I am... all that much, so most of the songs I get mixed up. The middle songs on LOVEppears I tend to get screwed up. And I always mix Audience up with Unite! XD
I tend to like her RAINBOW-present music better, so I know it better.