How is a symphony typically structured?

A symphony is typically structured in four movements, which follows a conventional format established during the Classical era and continuing into later periods. This four-movement structure usually consists of:

1. An opening movement that is often in sonata form, featuring themes that will be developed later.

2. A slow second movement that contrasts with the energetic first, often offering a lyrical or reflective quality.

3. A lively dance-like third movement, commonly a minuet or scherzo, which provides rhythmic contrast and lightness.

4. A final movement that is typically fast and vigorous, often bringing closure to the themes introduced in earlier movements, frequently in sonata or rondo form.

While there are symphonies with other structures, the four-movement format has become the standard in Western classical music, particularly since the works of composers like Haydn, Mozart, and Beethoven. Other formats, such as three movements, might be used for certain types of works but do not represent the typical symphonic form.