The recent meteorites showed me that Russia is Youtube central. Now, just a few hours after Chuck Berry's show in Moscow (tonight, last night?) you can already see just about all of it. This rough and rousing piece will get you started. (And as you watch it, remember, 86 1/2 years old, after God-knows-how-many-hours of plane flights and airports! Pretty amazing!)
Also worth considering is how times have changed. The guy started his career during the first, early blasts of the Cold War.