Mike, forgot to say - which might make my attitude a little clearer - that the greater part (not all, but a large part) of what I play relies very much on improvisation. To do this regularly and without repeating and making overmuch of hackneyed musical clichés - in front of a shedload of people, on the spot - takes a lot of practice. To be able to do this even adequately, you have to have a bedrock knowledge of the structure of a piece from the inside out. I don't think I've ever been totally satisfied with an improvised performance yet. Some have been not bad and some OK - but the search to create something fresh and spontaneous all the time is almost an impossibility. We try our best - and that's all anyone can do - but the hard, basic work is away from the audience.