Keyboard concertos by Johann Sebastian Bach practice that lasted until the early nineteenth century, namely the soloist played along with the orchestra in "tutti" sections, only coming into prominence in "solo" passages. The works BWV 1052–1057 were intended as a set of six, shown in the manuscript in Bach's traditional manner beginning with 'J.J.' ("Jesu juva", "Jesus, help") and ending with 'Finis. S. D. Gl.' ("Soli Deo Gloria"). Aside from the Brandenburg concertos, it is the only such collection of concertos in Bach's oeuvre, and it is the only set of concertos from his Leipzig years. The concerto BWV 1058 and fragment BWV 1059 are at
Brandenburg the Province of Brandenburg, again subdivided into the government regions of Frankfurt and Potsdam. In 1881, the City of Berlin was separated from the Province of Brandenburg. However, industrial towns ringing Berlin lay within Brandenburg, and the growth of the region's industrial economy brought an increase in the population of the province. The Province of Brandenburg had an area of and a population of 2.6 million (1925). After World War II, the Neumark, the part of Brandenburg east of the Oder–Neisse line, was transferred to Poland; and its native German population expelled. The remainder of the province became a state