Tabbed by Dave
          Drop D tuning
          Intro and verse riff
          [---------------------------------]
          [---------------------------------]
          [-9-9-9-9-8-8-8-8-4-4-4-4-4-4-4-4-]
          [-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-]
          [-7-7-7-7-6-6-6-6-2-2-2-2-2-2-2-2-]
          [-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-]

          There's another variation to this riff during the intro and verses
          that goes a little something like this
          [---------------------------------]
          [---------------------------------]
          [-9-9-9-9-9-9-9-9-8-8-8-8-4-4-4-4-]
          [-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-]
          [-7-7-7-7-7-7-7-7-6-6-6-6-2-2-2-2-]
          [-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-]

          Then there's the chorus and Oh how sweet it is
          [----------------------------------------------------------]
          [----------------------------------------------------------]
          [----------------------------------------------------------]
          [-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-6-6-6-6-6-6-6-6-6-6-6-6-6]
          [-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-6-6-6-6-6-6-6-6-6-6-6-6-6]
          [-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-6-6-6-6-6-6-6-6-6-6-6-6-6]

          Then the interlude
          [-9-9-9-9-9-9-9-9-8-8-8-8-4-4-4-4-]
          [-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-]
          [-7-7-7-7-7-7-7-7-6-6-6-6-2-2-2-2-]
          [---------------------------------]
          [---------------------------------]
          [---------------------------------]

          Then it goes back to the chorus. Then back to the verse for 
         the end of the song.