Keyboard concertos by Johann Sebastian Bach practice that lasted until the early nineteenth century, namely the soloist played along with the orchestra in "tutti" sections, only coming into prominence in "solo" passages. The works BWV 1052–1057 were intended as a set of six, shown in the manuscript in Bach's traditional manner beginning with 'J.J.' ("Jesu juva", "Jesus, help") and ending with 'Finis. S. D. Gl.' ("Soli Deo Gloria"). Aside from the Brandenburg concertos, it is the only such collection of concertos in Bach's oeuvre, and it is the only set of concertos from his Leipzig years. The concerto BWV 1058 and fragment BWV 1059 are at
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