Brandenburg Concerto No. 5 Another coincidence is that the concerto's middle movement is built on a theme composed by Marchand, as if Bach wanted to show off to his prospective competitor how he could elaborate that theme quite differently from its composer's original treatment. The possibility of a performance of the early version of the fifth "Brandenburg Concerto" in Dresden in 1717 was first tentatively proposed by harpsichordist and musicologist in the early 1990s. Although the hypothesis rests on a complex of circumstantial indications without direct evidence, it has been picked up by Bach scholars. Formally the fifth "Brandenburg Concerto" is a concerto grosso,
Brandenburg-Prussia the Catholic-Imperial camp in the Treaty of Königsberg (1627) and accept garrisons. When the Swedish Empire entered the war and advanced into Brandenburg, George William again claimed neutrality, yet Gustavus Adolphus of Sweden compelled George William to join Sweden as an ally by occupying substantial territory in Brandenburg-Prussia and concentrating an army before the town walls of Berlin. George William did not conclude an alliance, but granted Sweden transit rights, two fortresses and subsidies. Consequently, Roman Catholic armies repeatedly ravaged Brandenburg and other Hohenzollern lands. During the Thirty Years' War, George William was succeeded by Frederick William, born 1620, who