premise: Happiness in Slavery is a musical work.
hypothesis: `` Happiness in Slavery '' is a song by American industrial rock band Nine Inch Nails from their debut extended play ( EP ) , Broken ( 1992 ) . Nine Inch Nails ' performance of `` Happiness in Slavery '' at Woodstock ' 94 , included on the concert 's compilation album , won the Grammy Award for Best Metal Performance in 1996 .