What makes a rock 'n' roll song great? Well, there's a bunch of things that come to mind -- a killer riff, or haunting lyrics. The one that gets overlooked is context. Bands that have been around the block a few times -- two that I mentioned in a post the other day were R.E.M. and the B-52s - can continue to make great music into their Medicare years, but they can't easily recapture the way we felt when we heard them that first time, and they suffer for that. Great music is also associated with a certain time and place. Would a song like the Rolling Stones' "(I Can't Get No) Satisfaction" have the same power if it had been released in 1985 instead of 1965, in between the JFK assassination and the Gulf of Tonkin, on the cusp of a sexual revolution? I think not.