Cornetto Page
At left:
Ricardo Simian - 3d printed cornetto- using the latest 3d printing
technology Mr.Simian is making instruments based on originals in Vienna
that can be scaled to a variety of pitch standards, and made left
handed or right handed with equal ease. Tuning at A=440 is the lower end of the
practical pitch range and demands some adjustment to the scaling
parameters to make a well-tuned instrument. This is discussed on
Mr. Simian's website, which is easily found using standard search
techniques. This instrument is made in the white material option. I covered my instrument in leather myself, but now
professionally covered instruments are available.
At right: Christoph
Schuler - corno (aka tenor Zink). These instruments really function as
as alto voice, as they play easily up to c an octave above middle c and
the lowest few notes that have the "bullocky" quality that Praetorius
complains about can be avoided in alto parts.
Learning the cornetto in isolation.
Faced
with the problem of living in relative isolation from good teachers and
chances to play to a good standard (with good regard to pitch
accuracy) I devised some exercises to play against using Finale
and play-back over large hi-fi speakers, to give
"ensemble" volume. With the cornetto tuning being somewhat flexible, it
is advisable to play against a pitch standard from the earliest
practice. Playing pitch accurately against a tuning machine needle give
the wrong (visual) feedback, when you really need to train your ears
and muscle memory.Playing against a tuning machine tone is problematic
too as it is not loud enough (without amplification) and does not let
you play against moving notes sequentially. Also practicing solo
does not impose playing at a set tempo, for a given duration, so tends
to make one undisciplined about playing to a strict tempo, and also
lazy about stopping playing when fatigue sets in. What these exercises
give is an infinitely patient assistant that gives you something to
play against for hours at a stretch with no complaint or fatigue on its
part.
Example "Cornetto 4". Set a speed of crotchet
(quarter note) to 40 (i.e. a bit slower than you want). The repeating
section is set to repeat 4 times in Finale
The initial note gives the pitch, start playing at the repeat sign. Play a variety of patterns:
[1] Unison held note
[2] Unison repeated notes (not tongued)
[3] Major thirds. Listen for pure interval which is 14c narrow of equal tempered 3rds.
[4] scales and formulaic patterns in crotchets (quarters)
[5]scales and patters in quavers (8th's)
Finale
notes are equal tempered, which fights a bit with instruments tuned in
meantone, which is a common tuning standard in the cornetto era, which
gives lots of pure 3rds in keys with few sharps or flats. This means
that b-flat sounds a little low, and b sounds a little high, relative
to mean tone. Here are approximate deviations from equal temperment for mean
tone, assuming A = 440:
C +10
C# -14
D +3
E-flat +20
E -4
F +13
F# -10
G +7
G# -17
A 0
B -flat +17
B -7
This means that a further set of adjustments is needed if you are playing with a meantone ensemble or keyboard.
Embouchure
and getting it to sound. It is really hard to sort out embouchure
problems and give advice that is much more than generalities when
problems are encountered.
Advice - contradiction and corroboration
Different teachers over the years have given advice which does not alway agree.