Based on the realization that not all of the concertos listed in the dedication autograph for Christian Ludwig von Brandenburg in 1721 were composed for the first time for this collection, Klaus Hofmann wrote the quintet version - for trumpet, recorder, oboe, violin and basso continuo - of the 2nd Brandenburg Concerto of Johann Sebastian Bach reconstructed. The subordinate tasks of the tutti strings as well as conspicuous compositional compromises at passages where the ripieno makes music independently form the basis for the assumption that the concerto represents an original arrangement of an original chamber music version. The reconstruction of this version has great formal stringency and tonal transparency and allows the colourfulness of the combination of instruments to emerge - an enrichment of the chamber music repertoire.