An announcement at the outset of Big & Rich's head-spinning debut promises "country music without prejudice" - and this freewheeling duo spend the next hour demonstrating just what that means.

Horse of a Different Color has a deliriously open-minded bag of tricks, from straight-on country to chugging rock to - no kidding - real rap, and it all works ridiculously well.

It's cause for celebration when an album this full of wild-eyed adventure, bursting at the seams with funky humor, dizzying invention and pure cowboy cool, kicks its way out of the Nashville barn.