(from the Album Led Zeppelin , (the 1st album)) 
as played by John Paul-Jones. 
 
Bass Tabbed by David Crowson September 1994 
 
You'll have to get the timings from the song, but 
it's quite a simple tune to learn 
 
G|---------------------------------| 
D|---------------------------------| 
A|------7-5--5------7--5-----------| 
E|-0--------7-----0-------7--------| 
 
repeat ad infinitum, ocassionally there is a break 
 
which goes 
 
G|---------------------------------| 
D|---------------------------------| 
A|---5-5-5-------------------------| 
E|----------5-5-5------------------| 
 
And that's it. Simple huh.