I reserve the right to play anything I want to, in any style I want to, on any instrument I choose to. And it's the right of the audience to like it or not. That's the way it goes.

I think there's a subtle difference between "authentic" and "classic" versions of songs and tunes. You might say, for example, that Dion's "The Wanderer" is the classic - and original - version of that song. But you wouldn't dismiss Dave Edmund's version as "inauthentic" - I hope.