Nine Inch Nails – Discipline – piano cover Mai 29, 2015 Cover, Cover Discipline, Cover Industrial, Cover nine inch nails, Cover Rock, The Slip, from the new album The Slip. And meet one of my red cats Like 0 Thanks! You've already liked this « Nine Inch Nails The Hand That Feeds Vartanov Albert drum cover » Leaving Hope – Nine Inch Nails (piano cover, version 2)