Keyboard concertos by Johann Sebastian Bach left Weimar in 1717. Many of Bach's orchestral harpsichord concertos are adapted from a model with one or more violin solo parts. Several of these earlier models are extant. The oldest of these is Vivaldi's concerto for four violins, RV 580, published in 1711, model for Bach's concerto for four harpsichords, BWV 1065. Bach replaced the part of his fourth "Brandenburg Concerto", BWV 1049, composed in 1721 or earlier, by a harpsichord part when he reworked it to the harpsichord concerto BWV 1057. Bach's extant violin concertos BWV 1041–1043, two for a single violin soloist and one for two violin
Brandenburg Navy recognized that they could never compete directly with the great maritime powers and concentrated instead on building the best army in Europe while maintaining good relations with naval powers such as Denmark and the Netherlands. The overseas colonies were eventually sold to the Dutch in 1721. In 1701, Frederick was crowned King in Prussia, marking a shift from Brandenburg to Prussia as the most important Hohenzollern realm. The Brandenburg Navy was consequently merged into the Prussian Navy that year. List of ships in the Brandenburg Navy : Brandenburg Navy The Brandenburg Navy was the navy of the Margraviate of Brandenburg