I have no words to describe my emotions other than smiley spam, but I'm not that kind of person. I'll just give you this, instead.
You're awesome.
Sept. 8th Update: Admittedly, Spore Origins doesn't have that good a soundtrack from what I'm hearing... but Creatures has a really nice one. Also, I'm going to update this with my thoughts every time you update.
Favorite Tracks thus far:
Your Own Personal Universe (Stage 0/Menu) (Need I explain?)
Riot in the Wilderness (Stage Beta) (It's the Willosaur hunting song, how can you go wrong?)
Natural Instincts (Stage Mobile/iOS) (It doesn't get good up until about 15 seconds in, but it's worth it... for me, anyway)
Go to Cell! (Stage 1/Cell) (It's a really nice suspense track. Among the best in the game, to be honest.)
Also Spore Zarathustra (Stage 2/Creature) (It's a good music piece, and one of the many fun little sci-fi references Will and his team put in. What more can I say?)
Our First Neighbours (Stage 3/Tribal) (I like the rhythm in this one. Nice track, Ben.)
Gearing Up for War (Stage 4/Civilization) (Sadly, the Civ Stage doesn't have a very good soundtrack. So, this track is just... okay.)
Space War (Stage 5/Space) (I like war themes. A lot. Especially good war themes, like this one.)
Evolve (Stage DS/Creatures) (Funnily enough, as someone who's only played the flash demo on the Spore website, I initially though that the theme in the actual game was going to be the theme used there. Also, while I like the tune... the music literally hurts my brain!)
Dishonorable Mentions:
Yep, least favorite tracks. Only three this time around.
Nearly all of Spore Origins (Stage Mobile/iOS) (For some reason, I don't find myself liking these tracks. Maybe it's just not epic enough?)
Pulled Under (Stage 2/Creature) (It's a very creepy track... enough for me to dislike it. But compared to the one below...)
Back To The Ground (Stage 3/Tribal) (Well, I know what's going to star in my nightmares tonight!)
Conversion Process (Stage 4/Civilization) (Not particularly a bad track, but... I don't really consider it a track in my eyes, so it gets put here.)
What The Grox (Stage 5/Space) (This is the only one here to get the 'So Bad it's Good' title! As for the song itself... it's... certainly something.)
The Wiltered Paradise, Baysee (Stage DS/Creatures) (Dunno, it's just not particularly memorable to me.)
Also, I'm not going to get the one for Galactic Adventures until it's finished.