ABSTRACT
A chromatic modulation is one that does not involve a common chord or tone. It can often be recognized by the presence of a pitch followed by its chromatically altered form. This chapter provides an example of a chromatic modulation to a closely related key and one to a distantly related key. Both the diminished seventh chord and the German sixth are useful in enharmonic modulations since they can be respelled to function differently than their original spellings yet remain sounding the same under both spellings. The chapter shows how a fully diminished seventh chord on the root d-sharp can be respelled in all its inversions as a root-position diminished seventh chord, tonicizing five different pitches (or keys). Since anyone of these tonicizations can be in the major or minor mode, eight tonicizations are possible. The linear movement of each chord root down one half step results in a dominant seventh chord.
