ABSTRACT
A cadence is a point of relative repose. Music is filled with moments, which vary in length, strength, and import. Cadences may entail a breathing point in the melodic line, an ebbing of the harmonic flow, a respite from the rhythmic action, or all of these. Some authentic cadences sound more conclusive than others. When the melody ends on the tonic, and the bass leaps from dominant to tonic, the most conclusive of all effects is produced. This is called a perfect authentic cadence. The half cadence sends a different message, promising continuation rather than finality. Because of this, it almost never ends a piece. The half cadence embraces a wider variety of harmonic patterns than the authentic or plagal. The meter of most music results from the synergy of melodic and harmonic forces. An occasional shift in the harmonic rhythm and/or melodic accentuation adds interest.
