Ternary form

Ternary form is a structuring mechanism of a piece of music. Also note that this structure, along with several other "music structures", can be used to choreograph dance. Ternary form is a three part structure. The first and third parts are identical, or very nearly so, while the second part is sharply contrasting. For this reason, ternary form is often represented as ABA. The contrasting second section is often known as a 'trio'.
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