Context: Longer works are often divided into self-contained pieces, called movements, often with contrasting characters or moods. For instance, symphonies written during the Classical period are usually divided into four movements: (1) an opening Allegro in sonata form, (2) a slow movement, (3) a minuet or scherzo, and (4) a final Allegro. These movements can then be further broken down into a hierarchy of smaller units: first sections, then periods, and finally phrases.

Question: What are self-contained pieces in longer works called?
Answer: movements

Question: How many movements are symphonies written in the Classical period usually divided into?
Answer: four

Question: What, typically, is the speed of the second movement in a classical piece?
Answer: slow

Question: A movement broken up further is called what?
Answer: sections

Question: The final movement of a classical piece is usually called what?
Answer: Allegro