David Henkelman at EUROMicroFest 2019

David Henkelman (CA) will give a keyboard recital on Saturday 25. May, 2019 at Museum für Stadtgeschichte, Wentzinger Haus, 11am- 12pm

He will play music from the 17th and early 18th Centuries in historical tunings – at least two different tunings will be used

Works by Johann Christoph Bach (1642-1703), Michelangelo Rossi (1601/1602-1656), Girolamo Frescobaldi (1583-1643), Johann Jacob Froberger (1616-1667), Johann Sebastian Bach (1685-1750)

Henkelman David - Photo David Henkelman was born in Vancouver, Canada. In 2012 he received a Bachelor’s degree in Anthropology and Spanish, and then in 2015 he received a Bachelor’s of Music degree in harpsichord and historical performance from McGill University in Montreal. In 2016 David began his studies at the Hochschule für Musik, Freiburg, studying harpsichord and fortepiano with Prof. Dr. Robert Hill and basso continuo with Prof. Michael Behringer. He finished his studies in 2019. As a harpsichordist and a continuo player, David has participated in several concerts and projects under such renowned directors as Jeanne Lamon (Tafelmusik), Raphaël Pidoux, Adrian Butterfield, and Ton Koopman, Since 2018 he has been a scholarship recipient from the Williamson Foundation of Music.

Michael Kudirka (guitar) opens EUROMicroFest 2019 on Friday, May 24th, 20:00.

Michael Kudirka – guitar

EUROMicroFest 2019. Friday, May 24th, 20:00.

Elisabeth Schneider Stiftung. Freiburg im Breisgau​, Germany.



  • 1⁄4-comma Meantone Tuning

Francesco Canova da Milano (1497-1543)

Fantasias from the libro terzo (pub. posth. 1562) Fantasia 2 (N 31) Fantasia 10 (N 13) Fantasia 6 (N 35) Fantasia 5 (N 33) Fantasia 11 (N 38)

John Dowland (1563-1626)

Four Lute Pieces Lachrimae (P 15)

Forlorn Hope Fancy (P 2)
Semper Dowland Semper Dolens (P 9) Mr. John Langton’s Pavan (P 14)

  • 1⁄5-syntonic comma Continuo (Werckmeister 1698)

 Johann Sebastian Bach (1685-1750)

Lute Suite in E minor, BWV 996

Praeludio, Allemande, Courante  Sarabande,  Bourrée, Giga

  • 12-TET with 1⁄3-tones and 1⁄4-tones

Jeffrey Holmes (b. 1971)

Draumr [Dreams] (2013)
I. Svarti Sæ [Black Sea] II. Blakkr Straumr [Dark Current] III. Svalbarð [The Cold Edge]

  • Temperament Ordinaire (Jean-Philippe Rameau, 1726)

Bryan Johanson (b. 1955)

I. Two Gizmos (2018) I Presto, ma realistico; II. Allegro vivo

  • 11-Limit Just Intonation (Lou Harrison and William Slye, 2001)

Dusan Bogdanovic (b. 1955)

Village Music (2004)  I. quasi improvvisando; II. Moderato ritmico


Michael Kudirka is a classical guitarist with many interests including collaborations with living composers, chamber music with guitar, and historical performance practice on lute and theorbo. Performing internationally throughout Europe, Asia, and North America he has appeared in many notable concert series, including Other Minds 8, the 43rd Darmstadt Ferienkurse für Neue Musik, Montreal’s “Musique Contemporaine”, Portland Guitar Festival, Guitar Foundation of America 2011 International Convention, Jacaranda “Music at the Edge”, and the L.A. Philharmonic’s “Minimalist Jukebox”, among many others. He has won first prize at several major guitar competitions including the 2000 Portland International Guitar Competition, the American String Teachers Association Competition, the Pacific Guitar Competition, and the University of Southern California Concerto Competition. He has won grants from the Theodor Presser Foundation, the California Arts Council, and the American Composer’s Forum and has held faculty positions at the University of North Carolina School of the Arts, Interlochen Arts Academy, University of Southern California, and Idyllwild Arts Academy.

Michael Kudirka is sponsored by D’Addario and Augustine strings.


with grateful support from Carl-Schurz-Haus:

Black Forest Percussion Group: Natur * Gesetz

A Partner event of EUROMicroFest 2019 and in collaboration with L’estro Armonico (two concerts).
1) Elisabeth-Schneider-Stiftung, Freiburg
10.05.2019, 8pm

2) Erzingen Kath. Pfarrkirche St. Georg, Stuhlingen
12.05.2019, 5pm

L’estro Armonico

Monika Ecker, Cello
Nadja Camichel, Flute
Yelizaveta Kozlova, Violin
Adhi Jacinth Tanumihardja, Harpsichord

Black Forest Percussion Group

Lee Ferguson
Christian Rombach
Dino Georgeton
Bertrand Gourdy

The concert carries the title of “Natur*Gesetz” and is based around two works, J.S. Bach’s “Musical Offering” and David Lang’s “The So-Called Laws of Nature”.  The listener will be experiencing two different types of microtonality in these concerts. L’estro Armonico will be playing in Valotti a’=415Hz while Black Forest will be playing hand-made instruments which have been tuned to a tempered scale; although the nature of the instruments and inconsistency of materials (Ceramic flower pots, wooden boards, metal pipes,) naturally create a microtonal quality and unusual sound spectrums. 

Stadt Freiburg Kulturamt 

Regierunspräsidium Freiburg
Erzingen: Katholische Pfarrkirche St. Georg

EUROMicroFest 2019

EUROMicroFest 2019 (Artistic Director, Donald Bousted)
4th international festival of microtonal music and interdisciplinary art presents:
Das Stimmt!!
Alte und Neue Musik
In Tune!
Early and New Music
EUROMicroFest is a collaboration between Microtonal Projects and un-sound e.V. in Freiburg, Germany.
Dates: 24th-25th May, 2019, at the Elisabeth-Schneider-Stiftung and Museum für Stadtgeschichte, Wentzinger Haus.


The concerts will feature guitarist Michael Kudirka (USA), sponsored by the Carl-Schurz-Haus Freiburg; keyboard player, David Henkelman (Freiburg/ Canada); duo Contour (microtonal trumpets and malletKat) and ensemble l’imaginaire (Strasbourg)


Speakers: Matthias S. Krüger (Lörrach, DE) with guitarist, Stephan Schmidt (Basel); Composer, Christian Klinkenberg (BE); recorder player Kathryn Bennetts (co-author of The Quarter-Tone Recorder Manual) (GB) and, from the Finnish Microtonal Society, composer Juhani Topias Vesikkala.

Pong,Pong,Pong – microtonal videogame for up to 6 players
Students from the Hochschule Macromedia with Prof. Ephraim Wegner


A full programme will be released soon!


Funded by

Strandkorbstiftung/ Freiburger Bürgerstiftung
Sparkasse Freiburg- Nördlicher Breisgau 
Stadt Freiburg im Breisgau Kulturamt
Stiftungen Landesbank Baden-Württemberg
Regierungspräsidium Freiburg


Musik Gillhaus


Venue Partners
Museum für Stadtgeschichte, Wentzinger Haus


EMF Freiburg Partner Ensembles:


International Partners
Internationale Gesellschaft für Ekmelische Musik (Salzburg)
‘Mikrotöne: Small is beautiful’ 
ZM4 (Zentrum für Multimedia und Mikrotonalität Musik, Hochschule für Musik und Theater Hamburg)
KL-EX Ensemble (Belgium) 
“Polyphonic Performance Spaces” Conference
Sound Plasma Tallin and Berlin

RASP on Bandcamp


We have been aware that buying RASP (Stephen Altoft’s 2nd CD of 19-div music) through Tutti is expensive, because of postage and packing charges, if you live at various points around the world.  We have therefore added it to Bandcamp.  We hope you will still buy it!  Although you get 3 listens for free!

Also, we have added Steve’s first solo 19-div CD The Yasser Collection to our Dropbox Resources.  This is now available FREE if you have signed up to The Microtonal Trumpet mailing list via the contact page.


“Seven Leaves” – An interactive musical narrative by Christian Klinkenberg


Christian Klinkenberg’s new Bohlen-Pierce composition ‘Seven Leaves’ was first performed on the 27th of April in the cultural center “Alter Schlachthof” Eupen (Belgium) with the Kl-Ex Ensemble. There will be a further performance on November 20th, 2018 in the “AINSI” Theater Maastricht (NL).

The musicians

  • Nora-Louise Müller: Bohlen-Pierce Clarinet
  • Todd Harrop: Bohlen-Pierce ChimesÂ
  • Franck Hemmerle: Percussion
  • Vedran Mutic: Bohlen-Pierce-E-BassÂ
  • Melle Weijters: Bohlen-Pierce-E-Guitar
  • Christian Klinkenberg: Bohlen-Pierce Keyboard
  • Paul Pankert: ViolinÂ
  • Suse Weisse: Storyteller
  • Lothar Felten: Interactive App
  • Jens Schumacher: Samples and real-time-fx
  • Marc Kirschvink: Paintings



A story about lost love, an evil witch, an enchanted tree, and the leaves that hung, but never grew is integrated in the performance.

The scale

The Bohlen Pierce scale is a 13-step non octave scale which is tempered to the perfect-twelfth (3/1). For this reason, the musicians have specially constructed instruments (clarinet, keyboard, chimes). The string instruments (e-guitar, bass, violin) also need to retune their strings and have to increase the spacing of the fingerings or frets by about half.

The app

The special feature of this performance: the audience can play along via an app.


EUROMicroFest, Chudoscnik Sunergia, IMPACT (International Meeting in Performing Arts and Creative Technologies), Jazz Maastricht

Photos by Peter Ortmann


RASP new CD released soon!

In a few weeks time Stephen Altoft is releasing his new CD, RASP.  To whet your appetites the full CD notes can be downloaded here: RASP CD Programme Notes.  Stephen is presenting 11 recently written pieces in 19-division tuning.  Like the Yasser Collection before it, these pieces are diverse in orientation and international in outlook.  The CD, presented as a Digipack, will be available through Tutti.