交响曲交响曲由意大利歌剧的序曲演变而来,18世纪后半叶发展成为独立的管弦乐作品,是许多国家的乐器不断更新和音乐表现方法相互渗透的结果。交响曲通常由四个乐章构成:第一乐章用奏鸣曲式写成,曲调流畅,速度较快,并富有戏剧性;第二乐章是具有抒情性和歌唱性的行板,通常用三段式、复三段式或变奏曲式写成;第三乐章是谐谑曲或小步舞曲,节奏轻快活泼,大都由复三段式写成;第四乐章速度最快,最常用的是回旋曲 The Symphony Symphony was evolved from the prelude of the Italian opera and developed into an independent orchestral work in the second half of the eighteenth century, as a result of the continuous updating of musical instruments and the intermingling of musical expressions in many countries. Symphony is usually composed of four movements: The first movement is written in sonata, the melody is smooth, fast and dramatic. The second movement is lyrical and singing, usually in three stages, Paragraph or variation style written; the third movement is scherzo or minuet, beats by dre, beats by dre, beats by dre, beats by dre, beats by dre, beats by dre, beats by dre, most lively by the trilogy; fourth fastest speed, the most commonly used is the rondo