Led Zeppelin 
 
Heres the main riff: 
 
e--------------------------------------------------------------------------- 
b-2-3----------------------------------------------------------------------- 
g-2-3--2-3-0-------0-------------------------------------------------------- 
d------------3-0-3---------------------------------------------------------- 
a--------------------------------------------------------------------------- 
E--------------------------------------------------------------------------- 
 
And this ascending part: 
 
e------5-5-5-------7-7-7---------10-10-10----------12-12-12----------------- 
b--------------------------------------------------------------------------- 
g--4/6---------6/8---------9/11--------------11/13-------------------------- 
d--------------------------------------------------------------------------- 
a--------------------------------------------------------------------------- 
E--------------------------------------------------------------------------- 
 
And after that this is played: 
 
e--11--11-------------------------11-11------------------------------------- 
b--11--12--11-12------------------11-12-11-12------------------------------- 
g-----------------12-10----10-12--------------12-10----10-12\--------------- 
d-----------------------12--------------------------12---------------------- 
a--------------------------------------------------------------------------- 
E--------------------------------------------------------------------------- 
 
And the chord before the keyboard solo and at the end of the song: 
 
e--------------------------------------------------------------------------- 
b--------------------------------------------------------------------------- 
g---7----------------------------------------------------------------------- 
d---5----------------------------------------------------------------------- 
a--------------------------------------------------------------------------- 
E---------------------------------------------------------------------------