Violin Sonata No. 33 in E-Flat Major, K. 481 - Mozart: Violin Sonata No. 33 in E-Flat Major, K. 481: III. Allegretto (con variazioni) (降E大调钢琴与小提琴奏鸣曲，作品481 - 第三乐章 小快板 - 变奏的)