Interstellar Overdrive by Pink Floyd 
                             Music by Syd Barrett 
                  From the album "Piper at the Gates of Dawn" 
Corrsctio added 3/10/99 
I have examined your tablature pages for Pink Floyd and believe I've found an error. The main theme from "Interstellar Overdrive" should start out: 
1----------------------------------------------
2----------------------------------------------
3----------------------------------------------
4----------------------------------------------
5---------------------------------------------- 
6------------6-------0---------0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0 
then, repeating the following sequence two times 
1----------------------------------------------
2----------------------------------------------
3----------------------------------------------
4----------------------------------------------
5---------------------------------------------- 
6-----7--7--6--7--6--5--5--4--5--3-----3--3--3--2--0-------------   let last
note ring 
after that, the bass comes in on the E and the full e-form barre chords follow (listen to recording for changes) 
B Bb B A Ab A G Gb E5 
That's the main theme, essentially. After that, whoever's playing should just make lots of weird discordant sounds and sound as Syd-like as they possibly can. :) 
-Nick Ian K.

This is the main guitar riff which appears as 
the intro and in various places thoughout 
the song. 

E5 (heavily palm muted) repeated using downstrokes 
then 
A A Ab A Ab  
G G Gb G Gb   
FFFFFFF GG E5 
B B Bb B Bb  
A A Ab A Ab   
GGGGGGG AA E5 
use barre chords. 
then everything goes a bit mad!!!