Very colorful, very interesting, some of the images evoke strong emotions... then there's a drum. Very odd.
The style of art is very consistent between images, which is something you don't see a lot of on here (especially in free/pwyw artwork like this). Images are of moderate resolution and are clean enough to be used right away.
The art style is very cool. And free at that! I would like to see more of these in the future.