Musica figuralis deudsch
Musica figuralis deudsch is a 1532 German music theory treatise by Martin Agricola, printed at Wittenberg by Georg Rhaw for singers and students learning mensural notation. The pictures are tabular diagrams of note shapes, rests and mensuration signs arranged in ruled cells, with mixed-width type and hand-drawn strokes that a designer could borrow for grid layouts and typographic rhythm.
