Here is the abstract:
In European music, freer treatment of the sixth and seventh scale degrees in the major key encouraged the use of independent V9 chords, which appear already early in the nineteenth century, are common by the mid-1830s, and are important to the process by which the hegemony of eighteenth-century compositional, improvisational, and pedagogical practices were broken down. This essay provides multiple examples of the clearest instances of the V9 as a harmony in direct and indirect resolutions.
