harmony

Diatonic

Harmony that uses notes within a given scale.

Dissonant

Combination of notes that sound unstable or tense.

7th chords

Chords including 7th degree of scale.

Dominant 7th

A chord built on the dominant note with an added minor 7th.

Diminished 7th

Chord made up of root note and a series of minor 3rds.

Cadences

Harmonic progressions that conclude a piece of music.

Pedal/drone

A sustained note/chord used throughout a piece of music.

Tierce de picardie

Where a minor piece ends on a major chord.

Power chords

Guitar chords containing of root and fifth. Usually used in rock.

12/16 bar blues

Chord progression usually used in blues music - usually 12 or 16 bars long.