Binary form is a way of structuring a piece of
music into two related sections, both of which are usually repeated. Note that Binary is also a structure used to choreograph
dance.Binary form was popular in the
Baroque period, often used to structure movements from
sonatas for
keyboard instruments. It was also used for short one movement works. However, around the middle of the
18th century, the form largely fell from use as
sonata form and organic
development gained prominence. When it is found in later works, it usually takes the form of the theme in a set of
variations. Many larger forms incorporate binary structures, and many more complicated forms (such as sonata forms) share certain characteristics with binary form.
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