There are actually four parts to this symphony (called "movements"). The classical symphony has four movements:
- An opening movement in sonata form, usually somewhat fast ("allegro")
- A slow movement
- A minuet or scherzo with trio
- An allegro, rondo, or sonata
Usually there is no musical connection between the movements, except for the key. Later composers during what is known as the "Romantic" period, often did return to earlier themes in the later movements of a symphony (e.g. Mahler in his 1st symphony).
A piece in sonata form usually has two contrasting themes which are first played one after the other (called the "exposition"). This is followed by the "development" where the composer explores harmonic and textural possibilities of the themes. Finally the themes are repeated (the "recapitulation").
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