 In coining the phrase "form follows function", Sullivan believed that the function of a building gave rise to its form and that the two should work in concert with each other to be beautiful.With its curvilinear plant forms and intricate framing of the picture window, the Chicago-landmark facade of this building is an outgrowth of Sullivan's belief in organic architecture.It was commissioned in 1921 by William P. Krause to serve the dual purpose of a residence and a music shop, at a total cost of $22,000.