"I don't know what you wanna describe as Rock 'n' Roll, but I certainly thought that 60s stuff, Bob Dylan and the Beatles, changed the world a little bit. But the effect seems to have retreated. I think it's harder than we think to change the world. These things go in cycles. It doesn't seem to have done an awful lot of good, does it? You know, all the talk of racial harmony and equality in the world... we haven't got a long way since the 60s."