Artist: The Pixies
Song: U-Mass

Hello, this is how I play this song, it has two essential parts, the first one repeats 
following:


   G5   F5 C5   D5
e:-----------------|
B:-----------------|
G:---------5555-7--|
D:-5555-3--5555-5--|
A:-5555-3--3333-5--|
E:-3333-1----------|

Until it starts doing:

   G5   C5 D5 F5 C5 A#5 A
e:-------------------------|
B:-------------------------|
G:------55-77----55-33-22--|
D:-5555-55-77-33-55-33-22--|
A:-5555-33-55-33-33-11-00--|
E:-3333-------11-----------|

The bass plays something like this, at least when she is not doing some of her crazy 
before the second part.

I wish this does the trick.
Esteban.