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-Liga Brandenburg-Liga The Brandenburg-Liga (VI) ("formerly the Verbandsliga Brandenburg") is the highest league for football teams exclusively in the German state of Brandenburg and at step six of the German football league system. Until the introduction of the 3. Liga in 2008 it was the fifth tier of the league system, until the introduction of the Regionalligas in 1994 the fourth tier. The champions of the Brandenburg-Liga are directly promoted to the NOFV-Oberliga Nord. The Brandenburg-Liga, previously referred to as the "Verbandsliga Brandenburg", was established in 1990 from thirteen clubs as a highest league for the German state of Brandenburg, which