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
Dan Brandenburg Dan Brandenburg Daniel R. Brandenburg (born February 16, 1973) is an American former football player who was a linebacker in the National Football League (NFL) for four seasons. He played college football for Indiana State University. He was drafted by the Buffalo Bills in the seventh round of the 1996 NFL Draft. In four seasons with the Sycamores, Brandenburg had 215 tackles (116 solo and 99 assist) while recording a school record 32 sacks (since broken). He also set the school record for sacks in a season with 13 during his sophomore campaign. He was a two-time All-American, and three-time