Mastodon - Iron Tusk
whole song is in 12/8 time signature 
wait for the drums to finish and then get right into it
Main Riff x4
  E E E  E  E  E   E E E  E  E  E   E  E  E t E   E  E  Q  S S Q.  
F-----------------------------------------------------------------|
C-----------------------------------------------------------------|
G-------------------------------------------^---------------------|
A-0-0-0--12-12-12--0-0-0--12-12-10--13-13-10-(10)-10-10-8--108-7--|

Riff 2 x2
F-------------------------------------------------|
C-------------------------------------------------|
G---------------------2p0h2-----------3-3-3-2-2-2-|
A-0-0-0-0-0-0-0-0-0-0-------0-0-0-0-0-------------|

F---------------------------------------------------|
C---------------------------------------------------|
G---------------------2p0h2-0-0-0-3-3-3/8-8-8-7-8~--|
A-0-0-0-0-0-0-0-0-0-0-------------------------------|

Riff 3 x1
F-------------------------------------------------------------|
C---------------8-7---------------------------------------8-7-|
G-0-0-0-3-3-3/8-----0-0-0-3-3-3/8-8-8-7-8~--0-0-0-3-3-3/8-----|
A-------------------------------------------------------------|

do everything again

Riff 4 x2
F-----------------------------------------------|
C-----------------------------------------------|
G-----------------------------------------------|
A-0-2-0-3-2-0-0-2-0-3-2-0-0-2-0-6~---0-2-0-6~---|

F-----------------------------------------------|
C-----------------------------------------------|
G-----------------------------------------------|
A-0-2-0-3-2-0-0-2-0-3-2-0-0-2-0-8~---0-2-0-8~---|
                    ______________ ____________________________
Riff 5 x2           |1.          ||2.                         |
F-------------------|------------||--------------------------||
C-------------------|-----------o||--------------------------||
G-0~~~~-8~~~~~~~~~~-|8--5--5653-o||--8--5--5653--5--2--2321--||
A-------------------|------------||--------------------------||

Riff 4 x2

Riff 6 x4
F-------------------------------------------------------|
C-------------------------------------------------------|
G-------------------------------------8-8-8-------8-8-8-|
A-12-12-12-0-0-0-12-12-12-0-0-0-0-0-0-------0-0-0-------|

F-------------------------------------------------------------|
C-------------------------------------------------------------|
G-------------------------------------10-10-10-------10-10-10-|
A-12-12-12-0-0-0-12-12-12-0-0-0-0-0-0----------0-0-0----------|

Main Riff x4

Ending
F---------------------------|
C---------------------------|
G---------------------2p0h2-|
A-0-0-0-0-0-0-0-0-0-0-------|