Artist: Helmet
Song: I Know
Album: Betty

This song is in dropped C#
A fast way to tune like this is to get the botttom string just like the beginning of Overrated
 drums...
E-----------0-0---------
B-----------5-5-------3-
G-----------5-5-------2-
D---------3---------0-0-
A---------3---------0---
D---------3---------0---

there's a small whammy bar dive in there somewhere

D-5-4-3-0-----0
A-5-4-3-0-----0
D-5-4-3-0-----0

E-1-
B-3-
G-3-
D-1-
A-1-
D-1-

The next part is natural harmonics on the 10th fret, and then 2 times on the 9th.

D-4-3-0-0--0
A-4-3-0-0--0
D-4-3-0-0--0

then
D-4-3-0-0--0-4-3-0-2-3-0-
A-4-3-0-0--0-4-3-0-2-3-0-
D-4-3-0-0--0-4-3-0-2-3-0-

do the intro stuff there

end of 2nd verse
D-12-10-0-10-12-0-10-12
A-12-10-0-10-12-0-10-12
D-12-10-0-10-12-0-10-12

Interlude
D-4-3-0-5-4-3-0-2-3-0-3-4-0-4-6
A-4-3-0-5-4-3-0-2-3-0-3-4-0-4-6
D-4-3-0-5-4-3-0-2-3-0-3-4-0-4-6

Then strum these chords:
E-1-----0--------------------------
B-3-----5-----3--------------------
G-3-----5-----2--------------------
D-1-----3-----0-----4-3-0-5-4-3-0-0
A-1-----3-----0-----4-3-0-5-4-3-0-0
D-1-----3-----0-----4-3-0-5-4-3-0-0

E-1-----0------------------------------------------
B-3-----5-----3------------------------------------
G-3-----5-----2------------------------------------
D-1-----3-----0-------4-3-0-5-4-3-0-2-3-0-3-4-0-4-6
A-1-----3-----0-------4-3-0-5-4-3-0-2-3-0-3-4-0-4-6
D-1-----3-----0-------4-3-0-5-4-3-0-2-3-0-3-4-0-4-6