Wow. That is tight.
Got the Seinfeld bass going and the freaky 1920's background vocals, the funk guitar...love the organ on this. How was all this done? Did you play everything yourself?
I mean, it's a strange track for me at least, but very well done. You have great clarity already, but one thing you might try to open it up more is take a little of the low end out of the main vocal. The voice is clear but on my setup here (bose bookshelf speakers w/ sub) it is escessively boomy and dominates the instruments at times and makes them seem smaller.
However, this is a unique enough number that I wouldn't necessarily know exactly what you're going for. Like I said, it already sounds pretty damn clear. Well done.