Although it sounds like a bass guitar (an instrument the group had never previously used), the sound is actually created by running Jack White's semi-acoustic, 1950s-style Kay Hollowbody guitar through a DigiTech Whammy pedal set down an octave.
Selvom det lyder som en basguitar (et instrument som gruppen aldrig tidligere havde brugt), er lyden faktisk skabt ved at køre Jack Whites semi-akustiske Kay Hollowbody-guitar fra 1950-tallet gennem en DigiTech Whammy-pedal, der ligger ned i en oktav.