Apparently Bach intended to write a harpsichord concerto but abandoned the endeavor after only 9 bars. The fragment was taken from the opening Sinfonia of the Cantata, BWV 35 “Geist und Seele wird verwirret” (1726). In the cantata, Bach uses an obbligato organ not only in the two sinfonias (which evidently form the first and last movements of this incomplete or lost instrumental concerto, possibly for oboe), but also in the aria No. 1, whose siciliano character likewise points to its original function as a concerto movement. Thus, some modern scholars have constructed a proposed harpsichord or oboe concerto from BWV 35 (sinfonia/aria/sinfonia), and the BWV 1059 fragment.