#1
Hiya, this is the 12 bar blues of the Rolling Stones' Love in Vain, if you play it open - without a capo - which is the way Keith played it live like on Ya-Ya's. Basically there's just the D (V) chords thats confusing me in measures 6 and 7. I'm pretty sure Robert Johnson's original didn't have this. Is this a common variation of the 12 bar?

||   G   ||   G   ||   G   ||   G   ||
||   C   ||   D   ||  G+D  ||   G   ||
||   D   ||   C   ||   G   ||   D   ||
Last edited by yorkey at Sep 20, 2011,
#2
12 bar blues in G would traditionally go

G G G G
C C G G
D C G G

So that D in bars 6/7 would not be included. There are many variations on 12 bar blues however and the structure is not set in stone by any means this is just the most common.
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#3
also i dont think the original is typically 12 bar either. i believe it lingers a bit on the I chord. and after the IV chord, it goes back to the I and then to the IV briefly and then to the I again. or maybe thats just how clapton does it. i know robert johnson tended to extend or shorten certain bars when he felt like it though.