I ask my young students to think of the notes being connected by a "bridge"
of strong steady air. Without strong air support the playing will be choppy
and stilted sounding. Exercises to develop the fast fluid motion of the
slide are essential. This fluid motion cannot be achieved with a wrist or
arm that is too stiff. The student must have some limberness in the wrist
and arm. In other words the movement must feel "legato". Articulation
of the notes is another vital (often neglected) area.
I like to equate the articulation of legato notes to be somewhere between
a soft "doo" and a "loo" syllable. Please remember that
this soft tonguing must be combined with the strong steady bridge of air.
The natural tendency when moving fluidly and tonguing softly is to blow
the air without enough support. Visualize a very warm solid stream of air
while articulating.
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