A double opus of improvised String Quartets in four movements each, using impressive technique and exquisite pacing in this live recording captured at the Offene Ohren, in Munich, Germany, 2023 by Dietrich Petzold on violin, tenor violin, clavichord & bowed metal, Ernesto Rodrigues on viola, Guilherme Rodrigues on cello and Matthias Bauer on double bass.

Four string improviser convene at Ulrichsberger Kaleidophon, in Germany in 2021, two of them from Germany--Dietrich Petzold on violin, viola, clavichord & bowed metal, Matthias Bauer on double bass--and the Portuguese father/son complement of improvisers--Ernesto Rodrigues on viola and Guilherme Rodrigues on cello--for three works of delicately sinewy intersection & counterpoint.

An improvising string quartet with Creative Sources label leader Ernesto Rodrigues on viola, Guilherme Rodrigues on cello, German violinist and violist Dietrich Petzold and German double bassist Jan Roder, recording in the studio in Berlin in 2018 for seven active improvisations with a chamber feel, each named by the letters making up the word "PICTURE".

An album for bowed strings, bowed metal, and double bass, from the quartet of Dietrich Petzold on violin, viola, bowed metal, Ernesto Rodrigues on viola, Guilherme Rodrigues on cello, and Matthias Bauer on double bass, presenting a seven part suite recorded in the studio in Berlin, active and exciting music that bridges classical technique with free improvisation.

German violinist & composer Dietrich Petzold joins violist Ernesto Rodrigues and cellist Guilherme Rodrigues, Petzold also bringing along a viola, clavichord and bowed metal objects, as the three perform live at SKUC Gallery, in Ljubljana, Slovenia for the 6 improvisations that build from languid tonal environments to detailed, rapid improv, all with remarkable control and patience.

Emulating the sounds and intentions of cranes through string improvisation and unusual techniques, the quartet of Estonian violinist Elo Masing, German violinist Dietrich Petzold, and Portuguese violist and cellist Ernesto and Guilherme Rodrigues name each of 8 tracks on the behavior of cranes, from forming a flock, migration, fighting, ritual dancing, to nesting.

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