Music Theory and Composition: Form and Structure

Sonata-allegro form is a musical structure consisting of three main sections: the exposition, the development, and the recapitulation.

The first subject is the main theme of the exposition section of a sonata-allegro form.

The second subject is the contrasting theme of the exposition section of a sonata-allegro form.

The development section of a sonata-allegro form is where the themes are developed and varied.

The recapitulation section of a sonata-allegro form is where the themes are restated in their original keys.

The coda is the final section of a sonata-allegro form and is typically a brief passage that concludes the piece.

Rondo form is a musical form that consists of a series of contrasting sections, with the main theme returning several times throughout the piece.

Variation form is a musical form that is based on a single theme that is repeated and varied throughout the piece.

Fugue is a musical form that is based on a single melody that is played by two or more voices.

Suite is a musical form that consists of a series of sections, each of which is based on a different theme.

Ostinato is a musical form that is based on a single chord progression.

Ostinato is a musical form that is based on a single rhythmic pattern.

Ostinato is a musical form that is based on a single melodic pattern.

Ostinato is a musical form that is based on a single harmonic pattern.

Ostinato is a musical form that is based on a single textural pattern.