Example 2a. Detail from the bottom of Example 2, where Klee marked metrical hierarchies through beams of varying thickness, differentiating the level of quarter notes (lower row) and their subdivision into eighth notes (upper row). Shown here are the first two quarter notes. The annotation on the left border reads “Der [sic] kleinste Taktstructur, Bach’sche Angabe der” [corner torn off]. (transcription taken from http://www.kleegestaltungslehre.zpk.org/ee/ZPK/BF/2012/01/01/055/ © Zentrum Paul Klee, Bern, Bildarchiv)