Sonata for Piano 4 Hands in F Major, K. 497 - Mozart: Sonata for Piano 4 Hands in F Major, K. 497: I. Adagio - Allegro di molto (为钢琴二重奏而作的F大调奏鸣曲，作品497 - 第一乐章 柔板，极快的快板)