Diminished seventh chord (viio)

Definition

A diminished seventh chord is a four-note chord consisting of a root, minor third, diminished fifth, and diminished seventh. It is often used to create tension and lead to resolution in music.

Analogy

Think of a diminished seventh chord as a group of friends who are always causing trouble together. They bring excitement and suspense to the story but eventually need to find their way back home.

Related terms

Leading tone: The leading tone is the note that is one half step below the tonic in a scale. It often resolves upward to create tension and drive towards resolution.

Dominant function: The dominant function refers to chords or progressions that have a strong pull towards the tonic. In Western tonal music, the dominant function is typically associated with stability and resolution.

Resolution: Resolution refers to the movement from dissonance (tension) to consonance (rest). In the context of a diminished seventh chord, resolution occurs when it progresses to a more stable chord.