Among the vast number of J.S. Bach's clavier works, there are a few pieces titled "Sonata," but none of them are widely known. This sonata is an arrangement of the third piece from "Hortus Musicus" (The Garden of Music), a collection of six trio sonatas for two violins, viola da gamba, and basso continuo, by J.A. Reinken (1643–1722), an organist and composer from Hamburg. Although it is an arrangement, it has been rewritten to such an extent—correcting and supplementing defects in the original, and even inserting a new fugue—that it is no exaggeration to call it entirely Bach's own work. The original work consists of a Sonata (comprising three movements), Allemande, Courante, Sarabande, and Gigue, but Bach only composed up to the Allemande. Therefore, in this performance, the order of movements has been rearranged for better balance (with the three movements of the sonata also dispersed).