Nailing It

“In the case of melody-notes the pressure required is surprisingly great. Masters of cantabile tone, such as Edwin Fischer and Wilhelm Kempff, instructed their pupils to press sustained melody-notes so strongly that the white under the finger-nails becomes visible”

–  from Interpreting Bach at the Keyboard by Paul Badura-Skoda

Fischer and Kempff were indeed great masters, but does this sound like good advice to you?