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
John Sigismund, Elector of Brandenburg John Sigismund, Elector of Brandenburg John Sigismund (; 8 November 1572 – 23 December 1619) was a Prince-elector of the Margraviate of Brandenburg from the House of Hohenzollern. He became the Duke of Prussia through his marriage to Duchess Anna, the eldest daughter of Duke Albert Frederick of Prussia who died without sons. Their marriage resulted in the creation of Brandenburg-Prussia. John Sigismund was born in Halle an der Saale to Joachim III Frederick, Elector of Brandenburg, and his first wife Catherine of Brandenburg-Küstrin. He succeeded his father as Margrave of Brandenburg in 1608. In 1611, John Sigismund traveled from