Grupo : Nirvana
Song  : Endless, Nameless
Album : Nevermind

Low E string is tuned WAY down...

 MAIN RIFF
          bend everything
--------16-16-16-16-
--------15-15-15-15- higher fret numbers are totally improvisated high up the neck.
--------14-14-14-14-
--------------------
0-0-0-0-------------
0-0-0-0-------------
PM_____

SECOND "RIFF"

----------------------I
2b3r2p02b3r2p02b3r2p0-I
2b3r2p02b3r2p02b3r2p0-I
----------------------I
----------------------I
----------------------I

QUIET RIFF
-------------I-----------I
-------------I-----0-----I
-----0-----0-I--------0--I
-------------I--------0--I
3--3----3----I2--2--2----I
-------------I-----------I

Then end is just pure noise jam, feedback, anti-solo and guitar smashing...I won't tab it...:)