Intro 
E|------------------|---------------------------|
B|------------------|---------------------------|
G|------------------|---------------------------|
C|-7777777777777777-|-7777777777-88-99-1010-1111|
G|-7777777777777777-|-7777777777-88-99-1010-1111|
D|-5555555555555555-|-5555555555-66-77-8-8--9-9-|


Just play a bit around with the last chords and add a slide in the end of the first bar

Theme I
E|-------------------|----------------|
B|-------------------|----------------|
G|-10----------------|-10-------------|
D|-10-1010-1010--12--|-10-1010-1010--7|
A|-8--1010-1010--12--|-8--1010-1010--7|
E|----8-8--8--8--10--|----8-8--8--8--5|

Theme II 
E|-----------------------|
B|-----------------------|
G|-----------------------|
D|-10--7--5/7--10--7--5/7|
A|-10--7--5/7--10--7--5/7|
E|-8---5--3/5--8---5--3/5|

Theme IIa
E|-----------------------|
B|-----------------------|
G|-10--7--5/7--10--7--5/7|
D|-10--7--5/7--10--7--5/7|
A|-8---5--3/5--8---5--3/5|
E|-----------------------|

Theme III (over solo - actually played by bass...) 

E|-------------------|
B|-------------------|
G|-------------------|
D|-------------------|
A|-------------------|
E|-x-8-5-5-x-8-5-5---|

Structure: 

Intro:          1x
Theme I:        4x
Theme II:       8x
Theme IIa:      2x
Theme II:       2x
Theme I:        4x
Theme II:       8x
Theme IIa:      2x
Theme II:       2x
Theme I:        4x
Theme III: too often...
Theme I:        4x
Theme II:  too often...until the songs fades out...