Concerto doppio in E flat major for Harpsichord and Fortpiano, 2 Flutes, 2 Horns, Strings and Basso continuo, W.67, H.479 - 1. Allegro molto (降E大调为大键琴，钢琴，2把长笛，2把圆号，弦乐组和通奏低音而作的协奏曲，W.67， 作品479 - 第一乐章 很快的快板)