Written by a progressive early modernist, this concise guide for performers and composers offers valuable insights and instruction. Suitable for musicians at all levels. Newly typeset and engraved.
Interesting enough (if you wonder about how to modulate between C flat and E sharp, you can find answers there), yet it is not any explanation of modulation or a real treatise, just list of modulation progressions mainly using dominant, subdominant, Napolitan chord and Dorian sixth...
At 62 pages, it is remarkably short, but if you are familiar with four-part counterpoint, it can really open your eyes to the creative possibilities of Western tonal music. Each example is more like a puzzle. How can I get from key A to key B? That said, I thought the notation used to describe the chords was a little confusing and it's definitely not an introductory work of musical theory.