The Ronnie Scott DVD is so educational.
You really have to watch him closely to realise exactly what he's doing.
Even having watched it sometimes you just don't have a clue how he's done what he's just done right in front of your very eyes.
He 'violins' intuitively, he will just bang the trem block in a quick staccato, back of strings for the hell of it, to terrific effect.
He 'rubber bands' the trem with either a bang downwards or a pull and release upwards.
He will hit the note and simultaneously dip the trem so that it sounds for all the world like he's bottlenecking.
Amazing player.