This piece is called Fire in the Evening (1929). 

I was originally drawn to this piece because of the color scheme in the painting. My eyes were immediately drawn to the orange square slightly off center. From this center point, I immediately got the impression that I was staring at a darkening landscape with the red spot as the light source of the picture, maybe a sunset at sea. After reading the title of the work and realizing that it was about a fire, I got a clearer image in my head.

Fire in the Evening is considered as a variant of the "square paintings", and really reflects the strength of Klee's color theories and techniques. He divides the landscape into  rectangles that somewhat obscure the landscape that he is painting, but using the color scheme he is able to portray it in a way that is still decipherable to viewers. The differences in color from the top of the painting to the bottom help define a sky/horizon in the background and solid ground (brown, dirt colored) in the foreground. The color also creates a certain mood for the painting - the world feels cool, but there is a warmth emanating from the fire in the middle.

The shorter rectangles in the center also create vertical rectangles, and the gradients of colors within these rectangles work to create a sense of depth in the painting.