[ Thread revival. - Mod ]
I have been making keyless chromatic flutes for about 10 years now, using my own, patented design, and variations, and I have never seen anyone else making flutes using my approach, but this keyless flute by Siccama is the closest, inasmuch as he uses the fingers of the right hand including the thumb, in a natural, ergonomic order to cover the Eb through G holes in chromatic sequence, while also paying attention to the ergonomics of the left hand. Giorgi is also similar in the right hand, but his left hand is very challenging. Siccama’s right hand is ergonomic, but differs radically from convention. My original patent covers an 8 hole design, using cross fingerings for G#, Bb and C. This design, and the 9 hole variant with left thumb covering a C hole, are very easy to manage, and once you have gotten used to using your right thumb, the fingerings are quite similar to Boehm flute, or saxophone. I have built other flutes with 10 holes which offer better accidentals and better “venting” overall, but the difficulty does increase as far as facility of execution. My Patent is US7700863.
There are several issues with keyless flutes:
*Ideally there would be at least 11 holes so every note gets its own hole. Most of us only have 10 fingers.
*Ideally the holes should be “large” with respect to the bore diameter. Most of us have limitations in how large a hole we can reliably cover, especially with our smaller fingers.
*Finger stretch is an issue, though actually it is easier on my design than most 6 hole flutes because of the distribution of the holes.
*With keys you can ignore some of the holes when they are not in use; not so with keyless, you need to manage them all.
*When relying on crossfingerings, if you want them to be in tune and not horribly stuffy, you need to consider this in every other aspect of the design, especially bore size and hole size. You cannot just adapt a bore profile and hole layout that may work well for a 6 hole flute and expect it to give good accidentals, it almost certainly will not.
It seems that in the past, “close” must have been good enough, because traditionally dimensioned flutes often simply cannot play the forked fingerings in tune, even when the non-forked notes are compromised for the sake of it. This is not acceptable in my opinion. The notes need to be able to be played dead on, albeit with embouchure adjustments. Having, for example, a flat F# and sharp F natural might have been ok when playing in just intonation in the key of D (because 5/4 is 14 cents flat and 6/5 is 16 cents sharp with respect to equal temperamant), but if the instrument is truly to be called “chromatic” this is out of the question. E.g., a flat F# over any B chord, or a sharp E# over C#, C#7 or especially C#M7, would be a disaster.
A genuinely chromatic, fully keyless flute that plays in-tune and with good - or even acceptable- timbre across the scale, and can actually be managed at full tempo by normal human hands, truly is, as Mr. McGee has written, the “Philospher’s Stone of flutemaking.” I know the pursuit of it has given me many sleepless nights, and I’m sure it will continue to do so!
Jonathan Bear
Orlando, Florida, USA