Song name: Take The Veil Cerpin Taxt
Band name: The Mars Volta
From The Album: De-Loused in the Comatorium
Tabber: Hames

The intro is just a scale build-up with a few random notes at the top, although I'm not exactly sure how it goes.
The main song however, then begins like this:

Riff 1:(x8)
G------------------------                        
D------------------------            n.b. Only play one 5 on A                        
A-5-5-----55-3-0---------             the first time though.     
D----------------6-5-3-0-

Riff 2:
G------------------------------
D------------------------------
A-5-------55-------55-------55-
D------------------------------

Then play Riff 1 (x4) followed by Riff 2 in which there is a low slide down instead of the second 5 on A in the 
second couplet. Then:

Riff 3:(x2)
G-------------------------------------------------------------------------------
D-------------------------------------------------------------------------------
A-5555555--------------8~--8888------------55555555-----------------------------
D-----------8~--8888--------------8~--8-10-----------8~--8-8-0h5555555577777777-

Then play Riff 1 (x6), Riff 2 and Riff 3 (x2), followed by a pause. Then:

Riff 4:
G---------------------
D---------------------
A---------3-------444-
D-8--x5--x---x5--x----

Riff 5:(x3)
G-------------------------------------                 G--------------------------------------------   
D-------------------------------------    Followed     D----------1918181517------------------------
A-555555-5-5-5-5----------3-------444-  by this fill:  A-555555/17----------17---------3-------444-
D----------------x8--x5--x---x5--x----                 D------------------------8--x5--x---x5--x----

Then play Riff 4 (x3) ending with a 5 on A. Then pause for a while, then:

Riff 6:
G------------------------------------------------------------------------------------------------------------------
D------------------------------------------------------------------------------------------------------------------
A-5--55-------55---55-------555--55-------55---55-------55---55-------55---55-------555--55-------55---55-------55-
D------------------------------------------------------------------------------------------------------------------

Bass Solo:
G----------------------------------------------------------------------------------------------------------------
D------------------------------------------------------------------------3-------------------------------2h3p2p0-
A-3h5555--5--3-0~-----3h5555-55--3-0------3h5555-55-53h5p3030---0003-03-0--030-3h5555~--3h5p30-30---3h555--------
D-------------------------------------653----------------------5---------------------------------53--------------

Solo Cont.:
G-------------------------------------------------------------------
D-------------------------------------------3--5--3--5--3-5-3-5-3---
A-3h5p3p0-3h5p3p0-0--------0--3-0--0-3h5555-----------------------5-
D------------------53-0--05-----------------------------------------

Then he plays lots of random jammy *** which i can't tab, it leads into something like this:

Riff 7:
G--------------------
D--------------------
A-0---5-3--/5-3---0~-
D---------------5----

This riff is played quite a few times before we reach the big finale: Riff 4, then Riff 5 (x4) but with this 
variation on the second of the four:

G----------------------------------------------
D---------12-12-10-----------------------------
A-555555-----------1210------------3-------444-
D-------------------------x8--x5--x---x5--x----

Then play Riff 4 (x3) with an extra 5 on A at the end, pause, then:

Riff 8:
G----------------------------
D----------------------------            Play this riff 5 times but on the fifth add
A-5--5h7p5-------------------                 six more mutes and a 5 on low D.
D---------8--8h10p85-555xxxx-

Riff 9:
G-------------------------------------------------------------------------------------------------------
D-------------------------------------------------------------------------------------------------------
A-5-5555-555---5-5555-555---4-4444-444---4-4444-444-----------------------------------------------------
D-----------------------------------------------------5-5555-555---3-3333-333---0-0000-000---0-0000-000-

And finally end with this:

G------------
D------------
A-5-5555-555-
D------------                                 

Song ends.