Overtone flutes

An overtone flute is one of the oldest sorts of flute. It consists of a simple tube without any finger-holes that is blown on the top end. It is easy for anyone to learn because of its simplicity and the beauty of the natural harmonics of the overtone scale. By opening and closing the end-hole and varying the amount and strength of air blown through it, the archaic and other-worldly overtone scale is easily produced.

I make flutes of varying lengths and inside diameters, all of which produce different sorts of sound in various pitches and registers. The overtone flute is available in two forms; as a fipple flute with a carefully crafted mouthpiece like a recorder, or as an open-ended notched flute similar to the S.American 'Quena'. ( check out: how to play overtone flute )

History:

To this day the traditional overtone flute is still played in Scandinavia where it is known as the 'Seljefløyte' ('willow flute' or 'sallow flute'). It can also be found further afield in the Balkans and eastern Europe. It is also known in Italy as a traditional folk-instrument often used to play the 'Tarantella'.
A woodcut from the sixteenth century book 'Cosmographie' by Sebastian Münster illustrating the section on the Black Forest shows an overtone flute-player and a bagpiper. It would appear then that -just as with the bagpipes with a single reed in the chanter- in the Balkans are the last vestiges of traditions once common throughout Central Europe.

(More at www.obertonfloete.de)

The medium and small sized flutes have various types of mouthpiece.

The straight mouthpiece is the simplest and more convenient one.

The beak-like form is familiar to many people from the recorder. I also make a special narrower version for the double-flutes.

The side-blown type is common in Italy and Scandinavia. Bear in mind that the sound is produced very close to the ear.

Somewhat harder to play is the aforementioned 'Quena' (or 'Kena') type, which produces a wider variety of tonal qualities.

{In the pictures from left to right: Double-flute with beak-form; with straight mouthpiece; side-blown; Quena type.}

All the overtone flutes can be made with a side-hole for semitones if so desired. ( Here a variety of playing techniques can be seen Link )
Small: Between the pitches of A(400mm) to F(500mm) these are made with an inside diameter of 12mm. Crisp and fast to play, giving a high, whistley sound. In Italian folk music it has often been used to play the 'Tarantella'.
Medium: The standard sizes are pitched from E(520mm) to A(850mm). Larger inside diameters produce a richer tone on the deeper notes, whilst smaller ones are easier to over-blow and sound somewhat more windy and whistley. The Scandinavian 'Seljefløyte' have a rather narrow inside diameter, I match it to the length to achieve the desired tonal qualities.
Large: The pitches from A(850mm) to C(1280mm) are so long that a different set-up is necessary to reach the end of the flute. On the shorter ones the blow-hole is set further back, but from the pitch of F onwards there is an auxiliary head-joint section set accordingly to arm's length. (See pictures).
A double flute version is also available. Two flutes are played simultaneously producing a fascinating sound effect.

other tunings on request

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on the right a recording of an Overtoneflute in G (ca. 880mm long)
recorded in Mirepoix, France

on the left an overtone flute in D (570mm) played by Fiona Rüggeberg
'Nahtegal' on the Album 'Buch der Balladen'

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