Changes

:: usually two or more phrases related by unity of melody, rhythm, tonality and texture.

:: usually two or more phrases related by unity of melody, rhythm, tonality and texture.

* Section

* Section

:: a cohesive group of phrases or periods comprising a major subdivision of work (such as a "development" or "transition" section).

:: a collection of phrases or periods comprising a major subdivision of work (such as a "development" or "transition" section).

* Binary

* Binary

:: a form which is divided into two unified parts, usually AB or AABB.

:: a form which is divided into two unified parts, usually AB or AABB.