Concerto for Flute, Violin and Harpsichord in A Minor, BWV 1044 - Concerto for Flute, Violin and Harpsichord in A Minor, BWV 1044: I. Allegro (为长笛，小提琴与大键琴而作的A小调协奏曲，作品1044 - 第一乐章 快板)