Some of the earliest pieces in this genre were written by the Milanese composer Antonio Brioschi [bree-OS-key], who wrote 26 of them. Seventy-eight of these pieces were written by Giovanni Battista Sammartini, who helped shift this genre away from an earlier "Italian" style. With an ensemble partly named the Olympic Lodge, Chevalier de Saint-Georges [che-val-YAY de sahnt george] premiered a set of six of these pieces in Paris. These pieces originally were (*) three movements and were used as overtures in opera houses prior to the developments of Mannheim School composer Johann Stamitz. Classical-era composers began writing pieces in this genre with an opening sonata, a slow movement, a minuet or scherzo, and an allegro or rondo finale. For 10 points, name this long genre for full orchestra, such as Haydn's “Farewell.” ■END■