Piano Sonata in E-Flat Major, Op. 13 No. 5, Hob. XVI:25 - Piano Sonata in E-Flat Major, Op. 13 No. 5, Hob. XVI:25: I. Moderato (降E大调钢琴奏鸣曲，Op. 13 No. 5, Hob. XVI:25 - 第一乐章 中板)