Well, I've nvr thought of it before till now... How do the pros do their partials so immensely fast n accurate? For example, the starting slurs in the staigers' version of carnival of venice; ppl like vizzutti are able to do so without breaking a sweat, all within the span of a few seconds. Are they doing 'true' slurs; just air and all, or do they incorporate tongue archs kinda like ur trills where u compress n vary the air stream? If it is really the former, how do u do so tat insanely fast? been at tis routine for years alrd and I'm still nowhere close to even that kinda mastery.