Green Carnation - Light of Day, Day of Darkness
Just the fact that it's 1 hour long and still manages to keep my actively listening is already an achievement. And besides that this song has very energetic parts, and touching slower parts with well placed effects. Progmetal masterpiece.
Day 02 - Your least favorite song
Mika - Lollipop
Annoys the crap out of me, don't think i need to explain why...
Day 03 - A song that makes you happy
Sonata Arctica - FullMoon
Actually the song that got me into metal.. still makes me feel good everytime i hear it.
Day 04 - A song that makes you sad
Avenged Sevenfold -A Little Piece of Heaven
Note that i really like this song, but the story is so depressive. The sad part is that it features parts that even makes sense in some weird, disgusting way..