Keyboard concertos by Johann Sebastian Bach that Bach composed the original in Weimar or Cöthen.) Both relate the work to performances by Bach of concerted movements for organ and orchestra in Dresden and Leipzig. Wolff also details why the violinistic figuration in the harpsichord part does not demonstrate that it is a transcription from a previous violin part; for one thing, the "extended and extreme passagework" in the solo part "cannot be found in any of Bach's violin concertos"; for another, he points to other relevant Bach keyboard works that "display direct translations of characteristic violin figuration into idiomatic passagework for the keyboard." Also did not
Brandenburg-Schwedt Brandenburg-Schwedt Brandenburg-Schwedt was a secundogeniture of the Hohenzollern margraves of Brandenburg, established by Prince Philip William who took his residence at Schwedt Castle in 1689. By appanage, they administered the manors of Schwedt and Vierraden on the Oder river (Uckermark and Neumark) as well as Wildenbruch in Pomerania (present-day Swobnica, Poland). Though prosperous, the cadet branch never obtained Imperial immediacy. Because of a lack of money in the late days of the disastrous Thirty Years' War (1618–1648), the "Great Elector Frederick William of Brandenburg in about 1640 mortgaged the Schwedt region to the Baltic German noble Gustav Adolf von (Varrensback,