Whoa! Nice tracks!
You definitely nailed the desert vibes. It makes me imagine a small camp town filled with tents and people riding camels and the likes.
I love the use of castanets in the day theme. It brings to mind flamenco music. Was that intentional?
I like the subdued nature of the night theme. It makes me imagine the people gathering around a bonfire late at night in the desert camp, and enjoying themselves.