Yes another good example of that sort of thing that Barbara is talking about is Will Noble, I tried for ages to work out what it was and I think it is subtle timing - that word or phrase hung on for (or shortened) just that 1,000 of a second - but repeated each time.

Mike Waterson sang the D-day dodgers and in the last verse there was always a minute pause between "in the mud and rain" and "you'll find scattered crosses". Magic.

I'd be interested to know what others think.