vii°7

Leading Tone: The leading tone is the seventh scale degree of a major or minor key, which forms the foundation for building the vii°7 chord.

Diminished Chord: A diminished chord consists of two stacked minor thirds, resulting in a tense and unstable sound. The vii°7 chord is an example of a diminished chord.

Resolution: Resolution refers to the movement from dissonance (tension) to consonance (release), which occurs when the vii°7 resolves to another chord within another key during tonicization.