Keith Richard’s sound

Yesterday I listened to the Rolling Stones, and Keith Richard has a pretty peculiar sound. It was not so easy (in fact I didn’t manage) to reproduce it with my guitar, I couldn’t find the proper chords and notes. I turned to youtube and I found out that Keith Richard plays with a guitar that is tuned a little bit different: Keef open G.

In practice this means that you have to tune down of one tone the E and the A strings. This results in a D-G-D-G-B-D, which is a nice G chord with the fifth at the bass without touching the guitar. And also in the typical sound of the Rolling Stones! But, browsing the internet I stumbled upon this nice video: