I transposed this part to octaves as to fill in the sound a bit.  The original just 
the higher notes.

Main Riff

e---------------------------------|
b-------------13^^^^15-13-12^^^^--|
g--9^^^^10^^^---------------------|
d-------------10^^^^12-10-9^^^^^--|
a--7^^^^8^^^^---------------------|
e---------------------------------|

Riff 2

e---------------------------------------|
b-------11------12------11------10-9-8--|
g---------------------------------------|
d-------8-------9-------8-------7--6-5--|
a---------------------------------------|
e--(6)-----(6)-----(6)------(6)---------|

e----------------------------|
b----------------------------|
g--9xx9xx9xx999xx9xx9xx9/10--|
d--9xx9xx9xx999xx9xx9xx9/10--|
a--7xx7xx7xx777xx7xx7xx7/8---|
e----------------------------|

This is the horn synth fill
that transitions into the main riff again.

e--15-15-14-14-13-13--|
b--13-13-12-12-11-11--|
g---------------------|
d---------------------|
a---------------------|
e---------------------|

This is the horn part as the main riff is playing for the second time

   Crescendo
e--------------------------------------------151514141312--|
b--12-12-12-12-12-12-12-12-12-12-12-12-12-12-121212121110--|
g----------------------------------------------------------|
d----------------------------------------------------------|
a----------------------------------------------------------|
e----------------------------------------------------------|

When you listen to the song you hear how the above riff cuts in half and plays twice.

This is th lower horn part in the same section

e-----------------|
b-----------------|
g-----------------|
d-------------10--|
a--7--7--7--7-8---|
e-----------------|

e-------------------------------------------------------------|
b-------------------------------------------------------------|
g--16--16--16--16-16-15-14-13-16--16--16--16-16-15-14-13hold--|
d-------------------------------------------------------------|
a-------------------------------------------------------------|
e-------------------------------------------------------------|

e--13--------13----13--|
b--12--------12----12--|
g--131313131313131313--|
d----------------------|
a----------------------|
e----------------------|

Then like the guitar riff before but I transposed the synth and the guitar together.
                                          This chord is over this riff too
e------------------------151514141312--  --19--|
b------------------------131312121110--  --18--|
g--------------------------------------  --16--|
d--9xx9xx9xx9/10-9xx9xx9---------------  ------|
a--7xx7xx7xx7/8--7xx7xx7---------------  ------|
e--------------------------------------  ------|

Then Riff 2 (from above) plays with this over it:

   Crescendo
e--19--19--19--19-19-18-17-16-19--19--19--19-19-18-17-16--|
b---------------------------------------------------------|
g--16--16--16--16-16-15-14-13-16--16--16--16-16-15-14-13--|
d---------------------------------------------------------|
a---------------------------------------------------------|
e---------------------------------------------------------|

And

e--13-----13--13--|
b--12-----12--12--|
g--10-----10--10--|
d-----------------|
a-----------------|
e-----------------|

Then it ends on

e----------------------151514141312--|
b----------------------131312121110--|
g--9xx9xx9xxx109xx9xx9---------------|
d--9xx9xx9xxx109xx9xx9---------------|
a--7xx7xx7xxx8 7xx7xx7---------------|
e------------------------------------|

The Bass is easy too

g---------------------------------------------------  ---------------|
d---------------------------------------------------  ---------------|
a---------------------------------------------------  ---------------|
e--0--0--0--0--0--0--0--0--0--0--0--0--0--0--0--01--  --0--0--0--01--|

g----------------------|
d----------------------|
a----------------------|
e--6----6----6----6----|

This is that low piano sound they use

g------------|
d------------|
a------232---|
e--1-4----4--|