No. 4 BWV 1017 - III. Adagio

Whose song is No. 4 BWV 1017 - III. Adagio?

Artist Album
Bach
Sonatas for Violin and Harpsichord - Kuijken-Leonhardt - cd2
Sigiswald Kuijken violon & Gustav Leonhardt clavecin
Bach: Sonatas for Violin and Harpsichord (Disc 2)