“In order to practice and improve on certain aspects of painting I often do quick sketches with a specific theme or subject matter. The drawing “Pitch” was one of these ‘test-paintings’; I started working on it with the intention of creating a very complex scene, but not over detailing it. Detail in the wrong place can hurt the overall picture, as it distracts the viewer from where he should be looking instead.”
http://www.3dtotal.com/team/Tutorials_3/makingof_pitch/pitch_01.php