Horowitz plays Liszt Consolation #3 (D flat) so comfortably. His fingers are always in contact with the keys. He uses no extra movements of the arm, body, or hands. (And I love how he puts his left hand on his hip at the end.)
From an interview with Horowitz in Etude Magazine (March 1932) via Kevin Purrone:
“The finger must have a consciousness of the movement which makes the singing melody.”