First, I think you've got the timing of the start of different tracks wrong. The second track lasts till 3:52, not 3:34 and therefore also the time of the third track is wrong, but the fourth is good again. That, or two tracks have flawlessly continued onto each other.
1. It's very calm and works well as a background track in say a hub-world. I wouldn't use it in any action-packed scenes though.
2. This one's just a tad short of funky, my own preferred playing style. It's got a nice groove and has a kind of relaxed feel to it. What kind of area is this 'Hard as Rock' going to represent?
3. Very mysterious and a little ominous even. I like how it keeps changing from 'loud' to really soft and has a lot of breaks in it. The violin is dramatic and sad; nice touch. This Picture City is really starting to take on a different feel for me than I had expected!
4. I can see why this can be mistaken for a piano. It's because it's not using the characteristic melodies a harp would have per se, and it uses a type of slow playing you would usually find in piano pieces. It sounds lonely and abandoned.
5. I don't know why, but I would say this almost sounds a little playful. It reminds me of the Hoodlum Headquarters for some reason. The scene is majestic and wonderful. Is this the colourful part of Picture City?
6. Ooohh, eerie and evil. Something really large may even be on your tail, but it doesn't sound quite frantic enough to be a true chase scene. However, something bad is definately going down. I could have guessed by the title, probably.

That ending is very scary, with the slow hum of wind chimes.
7. This one is really sad and spooky. It fits the title 'Spirit March' well. What are those almost choir-like sounds? They're very surreal. I like the sound of waves coming in. It's like one of those 'the end is near' moments. It was just a little disturbing how it suddenly ends like that and gets caught by the waves, but maybe that's exactly what you wanted to achieve, a shock.
8. Hmm... it begins like one of those credits to a story that ended really badly. Oh dear.

I'm not sure if it fits well as a dance (perhaps a really slow waltz?), but it's nice.
9. It sounds like the ending or intro to one of those games that begin with a child telling you what happened. It reminded me a bit of Drawn to Life. The end of a story, as written by a child? It's a
bit sad, but maybe it's just atmospheric. I can't really tell.
I really like how your tracks have become more varied now. Just the right amount of repetition and variation. I liked this soundtrack; it has a lot of different tunes in it. Good work!