Brandenburg Concerto No. 5 with a concertino consisting of three instruments. However, throughout the concerto the harpsichord takes the leading role among the soloists, with, for instance, a long solo passage for this instrument near the end of the first movement: neither of the other soloists has a comparable solo passage. In this sense the concerto has been called the first keyboard concerto ever written. Vivaldi, and other composers, had occasionally given solo passages to keyboard instruments in their concertos before Bach, but never had a concerto been written which gave the harpsichord a soloist role throughout on the scale of the fifth "Brandenburg
Organ concertos, Op. 4 (Handel) however, has favoured the original intimate scoring for chamber organ and small baroque orchestra. In the 1940s the blind organist Helmut Walcha prepared a version for organ and second keyboard giving one possible ornamentation and extemporisitation of the organ part in the slow movements. Modern performing editions of Walsh's 1738 solo keyboard version and the original scoring for organ and orchestra have been prepared by the musicologists William Gudger and Terence Best. Organ concertos, Op. 4 (Handel) The Handel organ concertos Op 4, HWV 289–294, are six organ concertos for chamber organ and orchestra composed by George Frideric Handel in