Some people say Bowie is all surface style and second-hand ideas, but that sounds like a definition of pop to me.

The tools are evolving, and people's interests are evolving as well. So, suddenly people like to hear bands, people like Devendra Banhart or the xx, bands that make a kind of virtue of sloppiness. That isn't what they would describe what they're doing, but the fact is they make a virtue of the sort of hand-made nature of what they're doing.

Basically, you're still sitting there using just the muscles of your hand, really. Of one hand, actually. It's another example of the transfer of literacy to making music because the assumption is that everything important is happening in your head; the muscles are there simply to serve the head. But that isn't how traditional players work at all; musicians know that their muscles have a lot of stuff going on as well. They're using their whole body to make music, in fact.

All cultures have these feelings about non-functional areas of activity. And the more time people have on their hands, the more they commit it to those areas.