Artist: led zeppelin
Song:   What is and never should be

My bass teacher taught me this by listening to the CD.  I don't know if thats against your guidelines or not.

Intro
G:-------------------------------8--------------------------
D:-2/7-----7----------------8h10---10-8---------------------
A:-----7h9---9p7p0-0-44-5-7---------------------------------
E:----------------------------------------------------------
Refrain
G:----------------------------------------------------------
D:----------------------------------------------------------
A:--------------7--------5---------3------------------------
E:-4-3-2-1-0-00--0--0-00--0--0-00---0--0-5-4-2-0-2-4-6-10-7-

There's all the parts to the song.  Figure out the order yourself.