Affectus is a kaleidoscopic selection among some of the most renowned pieces and collections written for harpsichord by J. S. Bach. Works such as the superb Chromatic Fantasia and Fugue in D minor BWV 903, the serene Contrapunctus I from The Art of Fugue BWV 1080, the striking Fantasia in C minor BWV 906 or the majestic Fugue in C-sharp minor BWV 849 from Well-Tempered Clavier show us the immense expressive power of his music.