The rythim guitar is playing some notes in the major penetonic scale for a couple 
chords. Here's the pattern

E chord |--------------------------------|
        |--------------------------------|
        |---------------------7---10-----|
        |---------77---1010--------------|
        |----88--------------------------|
        |--------------------------------|

A chord |--------------------------------|
        |--------------------------------|
        |--------------------------------|
        |-------------------5---8--------|
        |---------55---88----------------|
        |----66--------------------------|

B chord |--------------------------------|
        |--------------------------------|
        |--------------------------------|
        |---------------------7---10-----|
        |---------77---1010--------------|
        |----88--------------------------|


E
   Out in the country past the city limit sign well there's a honkey tonk
                      A
near the county line, The joint starts jumpin every night when the sun goes
    E          B
down, They got whiskey women music and smoke it's where all the cowboys all
                 E
go to boot scoot boogie, I gotta good job I work hard for my money when its
                                    A
quittin time I hit the door runnin, I fire up my pickup truck and let the
          E      B
horses run, I go flyin down that highway to that hide-away stuck out in the
                           E
woods to do the boot scoot boogie

CHORUS
E        A                                                      E A
    Yeah heal to toe docey doe com'mon baby lets go boot scootin, Cadilac
                                             E       B
black jack baby meet me out back were gon'na boogie, Get down turn around
                      E
go to town boot scoot boogie

(piano interlude)

Bartender asks me says son what'll be I want a shot of that red-head yonder
lookin at me, The dance floors hopin and its hotter than the fourth of july, I see 
inlaws crooks and straights all makin it shake doin the boot scoot boogie

CHORUS...

(Hope this has been helpfull.)