Audio–Visual Performance Extense with Nicolas Souchal, Théatre Astrée, Lyon
Nicolas Souchal (augmented trumpet) and Diemo Schwarz‘s (computer music design, visuals) art–science research studies the correspondences between the sound and visual worlds, as well as the sharing of control between humans and machines. To do this, a computer exploits the sounds of the trumpet in two ways. On the one hand, it applies live processing to these sounds, on the other hand, it analyzes them and draws from them the way in which the video navigates in a corpus of images of paintings by Elisabeth Saint-Jalmes. The public is invited to construct their own sensitive experience of the device and to interpret the correspondences between images and sounds.
Nicolas Souchal‘s inventive trumpet playing is in this project doubly extended by audio transformation and video generation, thanks to the cocavs project from Diemo Schwarz‘s art–science residency at Iméra – Institut d’études avancées d’Aix-Marseille Université.
Seminar and Audio–Visual Performance Augmentation Audio–Visuelle de la Trompette : Entre contrôle et imprévisibilité dans une collaboration recherche-création sur le long terme with Nicolas Souchal, Ircam, Paris
Nicolas Souchal (augmented trumpet) and Diemo Schwarz‘s (computer music design, visuals) art–science research studies the correspondences between the sound and visual worlds, as well as the sharing of control between humans and machines. To do this, a computer exploits the sounds of the trumpet in two ways. On the one hand, it applies live processing to these sounds, on the other hand, it analyzes them and draws from them the way in which the video navigates in a corpus of images of paintings by Elisabeth Saint-Jalmes. The public is invited to construct their own sensitive experience of the device and to interpret the correspondences between images and sounds.
Nicolas Souchal‘s inventive trumpet playing is in this project doubly extended by audio transformation and video generation, thanks to #mubu and the #cocavs project from Diemo Schwarz‘s art–science residency at Iméra – Institut d’études avancées d’Aix-Marseille Université. https://forum.ircam.fr/projects/detail/mubu/ https://www.imera.fr/chercheur/schwarz-diemo/
28.05.2025
Collective Creation Laminaire #25 with ONCEIM, La Muse en Circuit, Paris
Collective improvisation Laminaire #25 with ONCEIM at La Muse en Circuit, Alfortville.
20.05.2025
Extended Voice Duo Guylaine Cosseron / Diemo Schwarz, Impromptissimo, Paris

A deep dive into the plasticity of the voice and the fathomlessness of embodied electronics. The plastic edge and the internal body. How can the voice make visible what escapes sight? Through improvisation, Guylaine Cosseron and Diemo Schwarz deal with the duality and complementarity between vocal performance and digital tools. A poetic work that questions the relationship between humans, animality and machines.
https://cosseron-schwarz.bandcamp.com/album/in-my-water
Guylaine Cosseron & Diemo Schwarz, Audio Foundation, Auckland, Feb 2024 https://www.youtube.com/watch?v=aq-WuaFvQew
Guylaine Cosseron is a singer, vocalist and composer, Artistic director of Cie Vocal Unlimited in Normandy. Specialist in improvisation and the use of the voice as a musical instrument. Her eclectic voice, diverted in search of an internal sound world through great vocal technicality visiting all the music of the world through free improvisation.
Diemo Schwarz plays with electronic materials rich in timbres and textures, exploring different corpora of sound using gestural controllers, thus allowing expressiveness and the body to dialogue with the digital instrument. His use of concatenative synthesis recomposes the space of sounds and questions their intrinsic qualities. By freeing them from their usual contexts, they reveal unsuspected riches.
31.01.2025
Audio–Visual Performance Extense with Nicolas Souchal, Anis Gras, Arcueil
Nicolas Souchal (augmented trumpet) and Diemo Schwarz‘s (computer music design, visuals) art–science research studies the correspondences between the sound and visual worlds, as well as the sharing of control between humans and machines. To do this, a computer exploits the sounds of the trumpet in two ways. On the one hand, it applies live processing to these sounds, on the other hand, it analyzes them and draws from them the way in which the video navigates in a corpus of images of paintings by Elisabeth Saint-Jalmes. The public is invited to construct their own sensitive experience of the device and to interpret the correspondences between images and sounds.
Nicolas Souchal‘s inventive trumpet playing is in this project doubly extended by audio transformation and video generation, thanks to the cocavs project from Diemo Schwarz‘s art–science residency at Iméra – Institut d’études avancées d’Aix-Marseille Université.
13.01.2025
ONCEIM inaugurating Neto, Le Bon Marché, Paris
ONCEIM plays at the inauguration of Ernesto Neto’s installation at Le Bon Marché, Paris
09.09.2024
ONCEIM creation of pieces by Geneviève Murphy and Christian Marclay, Utrecht, Strasburg, Luxemburg
ONCEIM creation of two commissoned pieces:
Genevieve Murphy, Together We Feel and Alone We Experience
Christian Marclay, Constellation
“Dans la continuité de sa série Found in, Christian Marclay transpose la tactique de l’objet trouvé à l’orchestre avec l’Onceim.
C’est également sur cette collectivité hétéroclite de musicien·nes issu·es de tous les horizons musicaux que s’appuie Genevieve Murphy dans sa recherche poétique sur la perception individuelle au sein du collectif, ici incarnée par la relation entre l’ensemble et sa cornemuse des Highlands.”
Gaudeamus festival, Tivoli, Utrecht 07.09.2024
Musica festival, Eglise Saint-Paul, Strasburg 26.09.2024 (also playing Ellen Arkbro, For Orchestra, 2022 and Éliane Radigue, Occam Ocean, 2015)
Rainy Days festival, Philharmonics, Luxemburg, 24.11.2024
25.06.2024
Oratorio by Ensemble Icosikaihenagone / Benjamin Duboc, Maison de l’Ile de France, Paris
An oratorio with a virtual choir made from the voices of Ensemble Icosikaihenagone, complementing a rich cocktail of their musical inventiveness in textures and timbres, elegantly assembled by composer/improviser Benjamin Duboc.
Un voyage poétique et inédit au coeur des musiques improvisées et du jazz moderne, avec un casting de haut vol !
https://www.maisondelaculture-amiens.com/saison/saison-23-24/deux-experiences-musicales-inedites/
Oratorio
Tête d’affiche de la scène musicale expérimentale, le contrebassiste, compositeur et improvisateur Benjamin Duboc invente, avec les musiciens et musiciennes de l’Ensemble Icosikaihenagone et l’autrice Jeanne Benameur, un oratorio inédit qui mélange récit et musique dans une parfaite harmonie.
Maison de l’Ile-de-france, Cité Internationale Universitaire, 9 D Bd Jourdan, 75014 Paris
14.06.2024
Augmented trumpet Extense with Nicolas Souchal, Theatre Aleph, Ivry-sur-Seine
Concert Extense for augmented trumpet and visuals with Nicolas Souchal (trumpet), Diemo Schwarz (computer music design, visuals).
Nicolas Souchal‘s inventive trumpet playing doubly is in this project extended by audio transformation and video generation, thanks to #mubu and the #cocavs project from Diemo Schwarz‘s art–science residency at Iméra – Institut d’études avancées d’Aix-Marseille Université. https://forum.ircam.fr/projects/detail/mubu/ https://www.imera.fr/chercheur/schwarz-diemo/
01.06.2024
Solo Absence for audio–visual concatenative synthesis, La maison en bois, Abbéville-la-rivière
15ème promenade
4 solos et 4 plats
- Maki Watanabe danse Butô
- Thierry Mercier guitare Musiques novatrices d’aujourd’hui Du XXeme au XXI ème
- Diemo Schwarz Performance images et sons “Absence” solo for audio–visual concatenative synthesis
- Gaël Mevel violoncelle et voix autour d’un poème de Saint John Perse
Sabine Hérondelle Création culinaire
La maison en bois, 6 rue beauregard, 91150 Abbeville la rivière, 06 30 36 91 45
http://www.gaelmevel.com
22.05.2024
ONCEIM collective creation Laminaire #24 at Maison de l’Ile de France, Paris
ONCEIM collective creation at Maison de l’Ile de France, Cité Universitaire, Paris.
Mercredi prochain, l’Onceim concrétisera une journée ponctuée de sessions d’improvisation en proposant un concert public à 20h : Laminaire #24. La collection intitulée Laminaire réunit les concerts issus de séances de travail collectif et des résidences menées par l’Onceim.
En termes physiques, un écoulement laminaire est caractérisé par sa fluidité et se définit comme un glissement d’éléments, sans aucune turbulence. Par l’improvisation, les musiciens forment un ensemble de matières et de textures sonores qui dialoguent, se superposent et s’harmonisent dans une écriture polyphonique.
02.05.2024
ONCEIM plays Radigue/Laminaire at Musique Démesurées festival, Clermont-Ferrand
I will play percussion with ONCEIM for Eliane Radigue’s Occam Ocean XXV and electronics in the Laminaires series of collective creations at Festival Musiques Démesurées.
Éliane Radigue`s first piece for orchestra “Occam Océan” marks the third work period of the music pioneer and is at the same time an example of collective knowledge transfer through oral and aural transmission – embodied and performed by ONCEIM.
Le Lieu-dit — 5 € tarif unique
10 Rue Fontgiève, 63000 Clermont-Ferrand
15.03.2024
Creation of Extense with Nicolas Souchal, Anis Gras, Arcueil
First showing of project Extense for augmented trumpet and visuals with Nicolas Souchal (trumpet), Diemo Schwarz (computer music design, visuals).
Nicolas Souchal‘s inventive trumpet playing doubly is in this project extended by audio transformation and video generation, thanks to #mubu and the #cocavs project from Diemo Schwarz‘s art–science residency at Iméra – Institut d’études avancées d’Aix-Marseille Université. https://forum.ircam.fr/projects/detail/mubu/ https://www.imera.fr/chercheur/schwarz-diemo/
28.01.2024
Malaysia, Australia, New Zealand tour with Guylaine Cosseron
31.01.2024 Tonelist, PS Art Space Fremantle, Perth
02–04.02.2024 SoundOut festival, Canberra
06.02.2024 Black Box theatre, UNSW Art&Design, Sydney
09.02.2024 MONA (Museum of Old and New Art), Hobart, Tasmania
10.02.2024 Space Academy, Christchurch
11.02.2024 The Block, Christchurch
14.02.2024 Audio Foundation festival, Auckland
15.02.2024 Pyramid Club, Wellington
17.02.2024 Yours Café, Dunedin
Thanks to
Production: Le Tympan / Vocal Illimited
Support: Odia Normandie, Spedidam, CNM
06.12.2023
catart-mubu on Max Package Manager
First release of catart-mubu, the new version of CataRT based on the MuBu framework, on Max’s Package Manager.
28.11.2023
Oratorio by Ensemble Icosikaihenagone / Benjamin Duboc, Amiens
An oratorio with a virtual choir made from the voices of Ensemble Icosikaihenagone, complementing a rich cocktail of their musical inventiveness in textures and timbres, elegantly assembled by composer/improviser Benjamin Duboc.
Un voyage poétique et inédit au coeur des musiques improvisées et du jazz moderne, avec un casting de haut vol !
https://www.maisondelaculture-amiens.com/saison/saison-23-24/deux-experiences-musicales-inedites/
Oratorio
Tête d’affiche de la scène musicale expérimentale, le contrebassiste, compositeur et improvisateur Benjamin Duboc invente, avec les musiciens et musiciennes de l’Ensemble Icosikaihenagone et l’autrice Jeanne Benameur, un oratorio inédit qui mélange récit et musique dans une parfaite harmonie.
Maison de la culture d’Amiens (2 Place Léon Gontier, 80000 , Amiens)
Tuesday 28 November 2023 20h30 – 23h30
26.11.2023
Extended Voice Duo Guylaine Cosseron / Diemo Schwarz, Les 26 Chaises, Paris

A deep dive into the plasticity of the voice and the fathomlessness of embodied electronics. The plastic edge and the internal body. How can the voice make visible what escapes sight? Through improvisation, Guylaine Cosseron and Diemo Schwarz deal with the duality and complementarity between vocal performance and digital tools. A poetic work that questions the relationship between humans, animality and machines.
https://cosseron-schwarz.bandcamp.com/album/in-my-water
Guylaine Cosseron & Diemo Schwarz, Audio Foundation, Auckland, Feb 2024 https://www.youtube.com/watch?v=aq-WuaFvQew
Guylaine Cosseron is a singer, vocalist and composer, Artistic director of Cie Vocal Unlimited in Normandy. Specialist in improvisation and the use of the voice as a musical instrument. Her eclectic voice, diverted in search of an internal sound world through great vocal technicality visiting all the music of the world through free improvisation.
Diemo Schwarz plays with electronic materials rich in timbres and textures, exploring different corpora of sound using gestural controllers, thus allowing expressiveness and the body to dialogue with the digital instrument. His use of concatenative synthesis recomposes the space of sounds and questions their intrinsic qualities. By freeing them from their usual contexts, they reveal unsuspected riches.
12.09.2023
ONCEIM collective creation at Impromptissimo!, Paris
ONCEIM collective creation at Impromptissimo!, Maison de l’Ile de France, Cité Universitaire, Paris, invited by Fred Marty.
https://www.youtube.com/watch?v=wgWuNSIRAQA
03.06.2023
Audio–Visual Piece Absence, NIME, Mexico City
Solo audio–visual piece Absence played at the International Conference on New Interfaces for Musical Expression (NIME), Mexico City.
Absence evokes several notions of absence: Absence of light, absence of love, absence of humanity, when societies and all human artefacts will be destructured to gradually disappear within the materials and textures of the natural world, which, by themselves, will eventually dissolve back into primordial cosmic dust.
The piece starts with the images of crepuscular cities, the buildings mere shadows, before evolving towards images of cities in ruins, warning of impeding and very possible catastrophies for humankind, to which sounds are played that evoke emptiness and desolation. These elements gradually dissolve into the basic textures of natural materials of stone, sand, water, wood, with the sounds exploring different sensations of materiality through roughness and textures.
This path through different sentiments of absence is evoked in sound and images by a journey through intertwined corpora of sounds and images, linked by their cross-modal aesthetic properties of colour, texture, timbre, played via dynamic gestural control.
26.05.2023
Concerts with Ensemble Icosikaihenagone: Lukas Ligeti, Benjamin Duboc, Moers Festival
Two pieces with Ensemble Icosikaihenagone by Benjamin Duboc:
Lukas Ligeti, En même temps 26.05. 20h10
Benjamin Duboc, Volumes II for musicians only 27.05. 17h00
Moers Festival, 47447 Moers, NRW, Germany
Fiction musicale pour grand orchestre.
La musique est sociale, peut-être rien d’autre que cela ?
Ces volumes d’air dans l’espace, c’est de la place.
Il s’agit de nos places, celles que l’on a, celles que l’on donne et que l’on prend. Un partage de l’espace, un partage de l’air, un partage du temps.
Volumes II propose une cohabitation orchestrée des mondes exprimés par ces volumes mis en vibration.