the solo movements provide a contrast with the other movements, which are duos for violin and obbligato harpsichord; moreover as dance movements they add variety and lightness to the set, making it more like a dance suite. the harpsichord solo was later published in bach's clavier-übung i as the corrente in bwv 830, the sixth of the keyboard partitas; before that it had already been entered into anna magdalena's notebook. the violin solo, with the harpsichord providing a simple figured bass accompaniment, was an early version of the tempo di gavotta from the same partita. only the harpsichord part survives, but the violin solo for the fifth movement has been reconstructed without difficulty from the score of bwv 830; the missing violin part for the short adagio has been recovered from the second version of the sonata.