The Bridge Of Khazad Dum:

e:---------------------------------------------------|
B:---------------------------------------------------|
G:----------023~20---020~--------------023~235~35~7~~|
D:-0~-----0~------3~-----03~2~0~-----0~--------------|
A:---3~-33----------------------3~-33----------------|
E:---------------------------------------------------|

~ Hold the note. 

Have fun with the tabs.

P.s. I´m not 100% sure, that the tabs are right, but 99,9%. ;)