Bach’s Cantata BWV 35, Geist und Seele wird verwirret (Soul and spirit become confused), is one of three alto solo works in Trinity Time of the third annual church cycle of 1726-27 that has an old established and much used text of Georg Christian Lehms. It employs obbligato organ in “conversational galant” manner and has two arias in dance style siciliano and menuet. Its origin and genesis derives from much earlier borrowed instrumental concertos and sonatas in Köthen and Weimar. Questions remain. Just how many of the movements are based on preexisting works? Why does Cantata 35 have two instrumental sinfonias introducing the two parts, performed before and after the sermon (a rare Bach form in Trinity Time)? Was the unfigured organ part for his adolescent first son Emmanuel or for himself? Was Bach motivated to compose so many solo cantatas in the third cycle because he lacked competent resources or was he returning to the Italian style, without biblical dictum and sometimes closing four-part chorales