The present article discusses the relation between painting and music in the work by Paul Klee, bringing it into conversation with the music by Anton Webern. It assumes, as a starting point, that the main question is not about relating painting and music but rather about the relation between moving towards painting and moving towards music, hence the relation between forming forces and not between formed forms. Since for Klee the musical structure of the pictorial is understood as "active linear polyphony," the article develops this notion in conversation with Webern's thoughts on the polyphonic structure of twelve-tone music. The general purpose of the article is to determine what kind of thoughts emerge from the in-between of painting and music.