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
Organ concertos, Op. 7 (Handel) ornamentation supplied by Smith and have been recorded by Erato. Two modern performing editions of the concertos by the organists and musicologists Peter Williams and Ton Koopman provide missing movements and give suggestions for the ad libitum passages, possibly too earthbound according to some commentators. The recordings of the organists George Malcolm (1976) and Richard Egarr (2009) give further possibilities, which have so far not appeared in printed editions. Organ concertos, Op. 7 (Handel) The Handel organ concertos Op 7, HWV 306–311, refer to the six organ concertos for organ and orchestra composed by George Frideric Handel in London between