This is really cool.
Some of the timing was a bit off with some of the playing in the first track, but the composition is good.
I think the percussion in track 2, the snare felt a little off, or maybe a little dry.
I think I'd say most of my critique comes down to some of the execution. I think the composition was really good and quite appropriate to the theme.
It's worth doing several takes to get it right. It gets really hard playing live instruments when you're wearing headphones sometimes, especially playing a bowed instrument in a mix that has a lot going on - that's probably the hardest one to keep right timing wise I've found.
Keep it up, this is great work! :)