Violin Sonata No. 26 in B-Flat Major, K. 378 - Mozart: Violin Sonata No. 26 in B-Flat Major, K. 378: II. Andantino sostenuto e cantabile (降B大调钢琴与小提琴奏鸣曲，作品378 - 第二乐章 绵延的如歌小行板)