symphony wiki:
>For other uses, see Symphony (disambiguation). A symphony is an extended piece of music usually for orchestra and comprising several movements.The main characteristics of the classical symphony, as it existed by the end of the 18th century in the German-speaking world were:4 movements, of which the first would usually be a fast movement in sonata form, the second a slow movement, the third a ternary dance-like (or scherzo) movement in "simple triple" metre, finishing with a fourth, fast movement in rondo and/or sonata form.Instrumental, to be played by an orchestra of the relatively moderate size customary at the time.
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