Only
Nine Inch Nails
Drop-D tuning
Bass comes in at 0:25
Verse
G|------------------------------
D|-----7--------------7---------
A|-2-2----0--0-0--2-2----0------
D|------------------------------
Chorus
G|------------2-----
D|---0--------------
A|----------0---0-2-
D|-0---0-2----------
That\'s it!
G|---7---------14------
D|---------------------
A|-5---5-7--12----12-14
D|---------------------
Can be played instead of the opening synth part before it breaks into the main bass riff, playing it an octave above the chorus riff gives you somewhere to go in the chorus for a bit of bottom-end power.