I am not taking anything away from Dave, but it looked like he might have had an iPAD or tablet in front of him ? ... not that he looked at it very often ...

Very entertaining Dave, ... relaxed, easy going, no stress or strain ... well done ...

Even though we might have charts or a tablet in front of us, that does not mean we can't spontaneously 'take off' on a medley of songs that we know by heart ... and I personally don't think using charts - paper or tablet - diminishes our ability to satisfy our audiences ...
Plus, performing without charts is easier when one is using backing tracks or midi files, and not just the KB styles ...
just sayin'