Sonata for Violin or Flute and Continuo, No.1 in G Minor BWV 1020 - J.S. Bach: Sonata for Violin or Flute and Continuo, No.1 in G Minor BWV 1020: I. (Allegro) (G小调第1号为小提琴或长笛和通奏低音而作的奏鸣曲，作品1020 - 第一乐章 快板)