intro:  while the rhythm guitar stays on E, the slide guitar, which is tuned in open E as shown below,
        plays the following theme 8x (first 2x guitars only)

        1st = e  -12--10--9--7-
        2nd = B  --------------
        3rd = G# -------------
        4th = E  --------------
        5th = B  --------------
        6th = E  --------------

        then the rhythm guitar strikes the E chord only once per time, while the slide guitar plays some
        licks at the 12th fret (=E)

        once in between the rhythm guitar plays the following 3x
        -----------
        -----------
        -----------
        -----------
        -----------
        -0--3-3--0-

        the entire intro lasts 20 times, then the guitars fade out while bass and drums turn down low; all
        three different parts of the intro will be repeated during the verses when noted like this:
        slide theme = opening intro theme
        /12 = slide guitar slides up to 12th fret (=E)
        "3" = rhythm guitar plays single notes on low E string as shown above, but only once


----------------------------------------------- E (2x slide theme)
I was up this morning, blues walking like a man
                     /12                       E (2x slide theme)
I was up this morning, blues walking like a man
             /12                       E (2x slide theme)
worried blues, give me your right hand
                               "3"                      E (2x slide theme)
and the blues fell mama's child, tore me all upside down
                       /12                       E (2x slide theme)
blues fell mama's child, tore me all upside down
                               /12                               E (2x slide theme)
travel on ol' Jeffrey Lee, ya know, can't seem to turn him around



                             G  E (2x slide theme)
        So, preach the blues
                             G A E (4x slide theme)
        preach the blues now



    /12                         E (2x slide theme)
Blues is low down shaking chill
    /12                         E (2x slide theme)
blues is low down shaking chill
                        "3"                        E (2x slide theme)
you ain't never had them, I don't believe you will
    /12                              E (2x slide theme)
blues is an achin' old heart disease
    /12                              E (2x slide theme)
blues is an achin' old heart disease
                           /12                     E (2x slide theme)
it's like consumption, baby, killing me by degrees



                             G  E (2x slide theme)
        So, preach the blues
                             G A E (4x slide theme)
        preach the blues now


guitars fade out while bass and drums continue as before the first verse



-------------------------------------- E (2x slide theme)
I had religion, Lord, on this very day
              /12                      E (2x slide theme)
I had religion, Lord, on this very day
                              /12                          E (2x slide theme)
but the womens and the whiskey, they would not let me pray
                     /12                             E (2x slide theme)
gonna get me religion, gonna join the Baptist church
                     /12                             E (2x slide theme)
gonna get me religion, gonna join the Baptist church
                    "3" ----------------------------- E (2x slide theme)
gonna be a Baptist prea-cher, so I don't have to work



                             G  E (2x slide theme)
        Yeah preach the blues
                             G A E (8x slide theme)
        preach the blues now


end:  /12

*note: the title of Robert Johnson's original take from 1936 is "Preaching Blues (Up Jumped The Devil)". 
This is Robert Johnson's version of "Preachin' The Blues (Parts 1 and 2)" that Son House recorded in 1930.
JLP added the chorus and rewrote the third verse, lifting bits from 2 verses of Son House's "Preachin' The Blues (part 1)". 
The original main slide theme goes 12\10\4p0.