rolls are ornaments, used to attack or
emphasize a note or simply because they’re
rhythmically pleasing.
A roll typicall consists of two other
ornaments. The first is a cut.
Suppose I play a G and, while sustaining
the note, quickly lift and put down
again (cut) the finger over the A hole.
This must be quick and shallow (the cut)
and it sounds a bit like a barking dog
when done correctly. (very effective
and beautiful in its own right, and
a good way to attack or emphasize
a note).
The second ornament of which a roll
is composed is a tap. Again I’m playing
the G and I simply tap the index finger
of my rt hand on the next hole.
One basically raises a finger and strikes,
lifting it instantly. Taps are also
quite lovely and can be done anywhere-
but the idea is that one taps the note
below the lowest note one is playing.
Now a roll is done this way: again,
suppose I’m playing a G. I cut the
note above the G–of course as the
finger comes down the G sounds again,
and immediately I tap the note below
the G.
Or suppose I’m playing an A. I cut the
note above the A and immediately tap
the G. This is done quickly, but one
should hear the cut and the tap.
And it can be done in many places.
As Dave says, a teacher, a video,
or even a book and a CD will help.
The notes of a roll should be
tightly clustered, but distinct.
One plays finger vibrato by
playing a note, say a B and rapidly
waving a finger over the hole two
holes down (the G hole, in this case).
So if I’m playing a g
I wave my finger over the e hole.
The waving finger rapidly closes
and opens the hole. In effect
one taps the hole quickly and
repeatedly, making a vibrato
effect. Takes practice.
One can also do vibrato by
pulsing one’s breath from the
diaphragm–but sooner or later
one learns finger vibrato.
As to glottal stops, I don’t know
either–everything I’ve said comes
from whistle playing. Maybe somebody
will enlighten us both? Or
correct my mistakes? Best, Jim