Swap the harpsichord for the piano and the fingers really have to move.
Angela Hewitt has had years of experience playing Bach on a modern grand piano, which she puts to nimble use in the brilliant sonatas of Domenico Scarlatti.
Other pianists—Horowitz or Argerich, for example—have seized Scarlatti by the scruff of the neck with virtuoso results.
Hewitt respects his Baroque sense of proportion and scale. She plays a selection of 16 sonatas with expert control—perfect clarity, interplay of parts, clean tone, but also a delight in the music’s quick intelligence and vivacity.