A tongue-in-cheek album packaged like a Deutsche Grammophon release of a string quartet by fictional composer Frieda Bertelsohn Martholdys (1878-1907), which is instead a superb live ea-improv performance at the 2018 Music Unlimited Festival in Austria by Gaudenz Badrutt (electronics), Kai Fagaschinski (clarinette), Jonas Kocher (accordion) & Christof Kurzmann (electronics).

The trio of pianist Jacques Demierre, trumpeter Axel Dorner and accordionist Jonas Kocher recorded these live improvisations at Theatre Le Colombier in Les Cabannes, France, each performer then assembling a complete album selecting from the fourteen recordings, unique to each performer's aesthetic selection, sequencing and length, creating three distinct yet deeply attached albums.

The trio of Michel Doneda, Christoph Schiller and Jonas Kocher performing music of delicate tension and great assurance recorded in the spectacular church at Ligerz, Switzerland.

Singular but not strange improvisational intersections from this Swiss trio of open-minded and masterful musicians--Hans Koch on clarinet, Frantz Loriot on viola and Jonas Kocher on accordion--highly compatible collaborators who have developed a unique language of chamber-oriented free improvisation that experiments at the convergence of compositional and chamber jazz forms.

Clarinetist Xavier Charles, accordionist Jonas Kocher and percussionist Toma Gouband join French improviser Joris Ruhl for this extended improvisation of multiphonics, textures and timbres, evolving from subtle harmonics into vast waves of sound, pausing to punctuate with pointillist interaction, then expanding into dramatic waves of sound before carefully fading away; sublime.

Clarinetist Xavier Charles, accordionist Jonas Kocher and percussionist Toma Gouband join French improviser Joris Ruhl for this extended improvisation of multiphonics, textures and timbres, evolving from subtle harmonics into vast waves of sound, pausing to punctuate with pointillist interaction, then expanding into dramatic waves of sound before carefully fading away; sublime.

Operating on the border between free improvisation and composition, the international electro-acoustic ensemble Šalter Ensemble present three incredible works composed by members of the ensemble -- Tomaž Grom; Jonas Kocher & Gaudenz Badrutt; and Elisabeth Harnik -- developed with the full ensemble, incorporating jazz, free improvisation, electronics & sound art.

Three works from Canadian composer Chiyoko Szlavnics, two electroacoustic compositions incorporating sinewaves, one with a saxophone quartet and the other with two accordions, two flutes and two percussionists; and a string trio of long sustained tones and slow glissandi.