An excellent piece!
This is definitely one of the more engaging songs I've heard. The combination of the different sounds is pleasant on the ears, the voice is a nice accent to the melody that fits well, along with the fact that it's one of those rare songs that you don't mind having stuck in your head all day. Like others have said, it could be a bit longer. Other than that, it's golden.
I get this image in my head of an army of sinister-looking clockwork creatures fighting in an arena, and the voice is the shadowy figure that runs it all.
5 of 5, 10 of 10
Opinion: Keep up the good work!