Keyboard concertos by Johann Sebastian Bach 1059) which adds an oboe to the strings and continuo. Most of Bach's harpsichord concertos (with the exception of the 5th "Brandenburg Concerto") are thought to be arrangements made from earlier concertos for melodic instruments probably written in Köthen. In many cases, only the harpsichord version has survived. They are among the first concertos for keyboard instrument ever written. The earliest extant sources regarding Bach's involvement with the keyboard concerto genre are his Weimar concerto transcriptions, BWV 592–596 and 972–987 (), and his fifth "Brandenburg Concerto", BWV 1050, the early version of which, BWV 1050a, may have originated before Bach
Brandenburg stone Brandenburg stone The Brandenburg stone is an inscribed stone slab found in Brandenburg, Kentucky, United States in 1912, on the farm of Craig Crecelius. The stone contains a strip of linear markings that resemble letters of a script. Crecelius exhibited the stone several times, but was unable to find anyone who could identify the markings. Jon Whitfield, who acquired the stone in 1965, claims that they are Coelbren, a Welsh-language alphabet. Other writers have elaborated on these claims, arguing that this is evidence of pre-Columbian contact between the legendary Welsh prince Madoc and Native Americans. The consensus of Welsh scholars