Ai no Uta is featured on another love compilation:
http://rhythmzone.net/koda/news/detail.php?id=1052498
But it's a nonstop mix, so maybe nice to check out.
Btw. I've bought Kuu's mascara and eyeliner in black a while ago and it's a total recommendation.
Especially the eyeliner - it stays the whole day even in this humid summer heat here in southeast Japan.
Both are waterproof and easy to apply.