Definition: The word 'accordance' is a Latin term meaning "equal parts, or harmonious harmony" in musical terms. It refers to an arrangement of chords that harmonizes with each other and produces a pleasing, symphonic effect. The term was originally used to describe the harmonization of strings on a violin, but it has since been used more generally to refer to any arrangement of notes or phrases in music. The word 'accordance' is often associated with the process of improvisation, where musicians create new compositions based on the harmonies and melodies that have already been established by other players. In this sense, a composer might use a set of chords or keys to arrange an original piece for orchestra, rather than seeking out a set of pre-existing patterns. In music theory, 'accordances' are often described as "the basic rhythmic structure of the musical form." They are not just a matter of simple tuning, but rather a complex system that is used to create specific harmonic and melodic patterns in order to achieve certain musical effects.

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