Piano concertos by Wolfgang Amadeus Mozart followed by the works by Charles Rosen, and Daniel N. Leeson and Robert Levin. The first complete edition in print was not until that of Richault from around 1850; since then the scores and autographs have become widely available. Concerto No. 7 is for three (or two) pianos and orchestra, and No. 10 is for two pianos and orchestra, leaving 21 original concertos for one piano and orchestra. Early keyboard concertos were written by, among others, C.P.E. Bach, J.C. Bach, Soler, Wagenseil, Schobert, Vanhall and Haydn. Earlier still, in the Fifth Brandenburg Concerto by J.S. Bach, the keyboard part is
Brandenburg Navy Brandenburg Navy had almost thirty active warships. These ships were used primarily to secure control over hostile trade routes and maritime trading, as blockades and to provide naval defence, and to also provide reinforcement on various military operations, which would frequently involve engagements with unfriendly warships. In 1682, Frederick William, the prince-elector of Brandenburg, who was intensely involved in the navy's affairs, secured the navy a base at Greetsiel, but they shifted to Emden a year later. Frederick William died in 1688, and his descendants took no interest in the Brandenburg Navy. Frederick III and his grandson Frederick the Great