heres the tab for man if constant sorrows ive seen all the ones so far and
and i dont think they have the right riff but here it is...this is right
is sure of it....Drop D tuning capo 3rd fret (no rhythm shown)

intro riff
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-----------------------------------------
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--------------3b-0-----------------------
--3h5---3h5---------5-0--3-0-------------
--0-----0---------------------4b--0------

into this chord progression

--0----3----0---------------
--3----0----2---------------
--2----0----2---------------
--0----0----2---------------
--0----0----0---------------
--0----5----0---------------

thats pretty much the song but you can throw in this little riff when
goin back to the intro riff from the chords

-------------------------
------------------------
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-----------3--0------------
-0--3--5--------------------