Piano Sonata No. 13 in B-Flat Major, KV. 333 - Mozart: Piano Sonata No.13 In B Flat Major, KV 333 - Allegro (降B大调第十三号钢琴奏鸣曲，KV. 333 - 莫扎特：降B大调第十三号钢琴奏鸣曲，KV 333 - 快板)