How many movements did Haydn and Mozart prefer in their standard Classical Symphony?

Haydn and Mozart usually wrote their Classical symphonies in four movements, similar to the four-movement format established earlier in the 18th century by composers like Alessandro Scarlatti and Carl Philipp Emanuel Bach. The typical movements in a Classical symphony by Haydn or Mozart are:

1. First movement: Allegro or Allegro molto, usually in sonata-allegro form, with a strong focus on thematic development.

2. Second movement: Slow movement, often featuring a lyrical or expressive melody, sometimes marked as Andante, Adagio, or Larghetto.

3. Third movement: Minuet or Scherzo, providing dance-like or lighthearted contrast, usually in a faster tempo.

4. Fourth movement: Finale, often in a lively and energetic tempo, frequently involving a sonata-rondo or sonata-allegro form, bringing the symphony to an exciting conclusion.