Even if it is difficult playing with other people - sometimes it's great, sometimes it isn't, but that is kind of the point of it. It loses its point playing solo.

I wouldn't want to be ideological about it but I think of it as being the best way to approach this kind of playing. I don't think it works in other music, other kinds of playing.

I've always liked the effect of having somebody in there who hadn't the faintest idea what was going on.

In fact it's quite gratifying for me to see some of the people who really objected to this method of working now being quite so profligate in their use of it.