This recording is a completion of an internationally acclaimed series: Aapo Hakkinen and the Helsinki Baroque Orchestra conclude the cycle of Bach's harpsichord concertos with the concertos for 3 and 4 harpsichords. Here, too, Hakkinen surprises in terms of instrumentation. The harpsichords represent different schools of instrument building (German, Flemish, French and Italian), resulting in a remarkably differentiated sound. With Miklos Spanyi, Cristiano Holtz, and Anna-Maaria Oramo, Hakkinen is supported by experienced companions. This keyboard festival is rounded off with the monumental Duetto by the eccentric Bach pupil Johann Gottfried Muthel, presented by specialists Miklos Spanyi and Aapo Hakkinen on two historic clavichords. The Super Audio CD, recorded in Finland and Sweden, offers stereo and surround sound.