T Rex - Ballrooms Of Mars guitar chord

Ive been trying to find a tab of this for ages, so i thought id have a stab at it..

This is main riff pattern that i think is just played over and over throughout the song.

Its played quite loosely, i prefer to hit the bass notes of the chords then strum the

higher notes slightly afterwards so thats why the chords appear slightly off-kilter.

Havent got a clue what the A? actually is, sounds a bit diminished but not sure....anyway

hope its ok!Enjoy!!

RIFF 1

C B/C A A?

E-----8------------5--5

B-----8------------5--5

G-----9----9-------6--5 substitute the A? (dont know what chord that is)

D---10-----10-----7---6 with a standard barred D chord

A---10-----10-----7---6

E---8------7------5---5

C B/C A A?

You gonna look fine, be primed for dancing

C B/C A D

You gonna trip and glide along the trembling plane

REPEAT OVER FOR REST OF SONG I THINK

Substitute the A? with a standard barred D chord when you get to the end of the second line ie

E-5

B-7

G-7

D-7

A-5

E--

This is my first tab but i think it sounds ok.

Dont ask about the solo, i cant double track with an acoustic!

Any suggestions, opinions send to matt@moodguru.co.uk