Nine Inch Nails is back in full swing with the latest album, Hesitation Marks, due out September 3 and an upcoming tour already scheduled, but even with all of this going on, Trent Reznor is still finding ways to get people even more excited. He just announced that there will be four different album covers available when Hesitation Marks hits shelves.

Each cover was designed by artist Russell Mills and will be specific to a particular album format. He even used real blood, among other things, to make two of the covers. Mills is no stranger to Nine Inch Nails, having also designed NIN's 1994 album cover for The Downward Spiral.

Mills explained the covers in a statement on the official Nine Inch Nails website, saying, “The artworks, (30 mixed media pieces) that I eventually produced towards uses in the Hesitation Marks releases, evolved out of lengthy exchanges between myself and Trent and in response to the conceptual ideas that thread through the tracks and to the sonic territory that the album explores. I've tried to lock into the album’s prevailing mood and echo the album’s essence. The ideas are not communicated in a literal or easily digested form, as this would be boring for me and would insult the intelligence of a potential audience. I’ve tried to make works that obliquely allude to the essence of the subject matter, to its emotional core.”

1."Time and Again"

(Standard CD) (Plaster, earth, oils, acrylics, etching varnish, rusted linen, blood, microscope slides, on wood)

2. "Turn and Burn"

(Digital Copy) (Plaster, earth, oils, acrylics, etching varnish, bitumen, burning, rusted linen, blood, spent matches, on wood)

3. "Cargo in the Blood"

(Deluxe CD) (Burning, Polaroid frame, copper wire, mica, on velvet, on wood)

4. "Other Murmurs"

(Vinyl) (Plaster, earth, oils, acrylics, etching varnish, collage, on canvas, on wood)