Past Is A Grotesque Animal Tab

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Its about time i put this up. It took me quite a while to get the background riff and 
i wasnt sure if it was 2 notes left then 2 notes right (in stereo) or 3 notes left etc...

Anyway, here it is:
4 chords throughout song in repeat. Try muting un-noted strings
  Chords:

E--------------|
B--------------|
G---------7----|
D---5--8--7--3-|
A---5--8--5--3-|
E---3--6-----1-|

intro is simply the bass notes(3,6,5,1) played singularly

the riff:

E--------------------|
B--3-3---------------|
G-------0-0----------|
D-----------5-5------|
A----------------5-5-|
E--------------------|

E---------------------|
B---------------------|
G---------------------|
D--7-7-8-8------------|
A-----------8-8-------|
E---------------10-10-|

E--------------------|
B--------------------|
G--0-0---------------|
D------7-7-----------|
A----------8-8-------|
E--------------10-10-|

E------------------|
B------------------|
G--5-5-------------|
D------7-7---------|
A----------7-7-----|
E--------------8-8-|

if you listen to the song you can get the riff, timing etc.
i rated this as intermediate mainly because the riff has slightly weird fingering but a 
practice and you'l be lasting the whole 12 minutes.