Recorded on various floors and in different rooms at the music school Bochum in Germany in 2014, the duo of reedists Katharina Bohlen and Claudius Reimann add spring drums, gongs, cymbals, tubular bells, and sound plates to their understated and moody improvisations.

Five open improvisations from the quartet of Israeli saxophonist Ariel Shibolet, viola player Nori Jacoby, drummer Offer Bymel and double bassist Alexander Frangenheim, recording in Frangenheim's studio in Germany in 2011.

The 2nd release from the free improvising trio of trumpeter Tom Arthurs, bassist Miles Perkins, and drummer Yorgo Dimitriadis, recording in the studio in Berlin, 2012 for 8 collective improvisations with melodic strength and intensive communication.

Using extended techniques, Baltimore-based saxophonist John Berndt--director of Multiphonic Choir ensemble, a member of the Red Room collective and curator of their experimental performance series, and creator of the "Relabi" style of arrhythmic pulse--presents 15 succinct improvisations pushing his reed instruments to their outer edges in astonishing ways.

Eight free improvisations recorded in the studio from London improvisers, guitarist Daniel Thompson and flautist Neil Metcalf, recorded and presented in the order played to maintain the familiar dialog and sense of adventure between two frequent collaborators.

Bassist Matthias Bauer and Maria Lucchese on theremin, zither, didgeridoo, launeddas, oceandrum, and gong, perform free improvisation with Bauer providing a solid melodic foundation which Lucchese punctuates and expands in unique and surprising ways.

The quartet of Andreas Backer on voice, David Stackenas on guitars, Joe Williamson on bass, and Stale Liavik Solberg on drums & percussion, for open-minded, improvised chamber music focusing on interaction, textures, dynamic variations and timbre.

Solo improvisations on the Turkish Clarinet from Claudio Parodi, an Italian classically trained pianist who also works with self-built/self-modified electronics, non-western reeds, and selected percussions.

The free improvising duo of pianist Manon-Liu Winter and saxophonist Udo Schindler performing at the SALON fur KLANG + KUNST in Kralling, Munich in 2012, an amazing dialog that balances subtle and explosive playing in inventive ways.

Lithuanian sound and industrial artist Gintas K (Gintas Kraptavicius) in an album of abstract electronics composed on the computer, 11 tracks of burbling and glitching sound.

Elisabeth Harnik on piano and Udo Schindler on bass clarinet, contrabass clarinet, soprano saxophone and cornet in a free interchange of subtle nuance and strong dynamics recorded live at SALON fur Klang + Kungst in 2009.

The electroacoustic improvising quartet of guitarist Peter Alexius, drummer Joe Herteinstein, Joker Nies on raw electronics, and Sebastian Grammss on spacebass, in 9 tracks that run the gamut from groove-based intensity to open dialog using unusual voices.

Four masterful improvisers - Axel Dorner (trumpet), Andreas Willers (acoustic guitar & electronics) and Achim Kaufmann (piano) - performing as the .AAA. trio, and then each presenting a solo work, demonstrating their incredible music skills together and alone.

A free duo between trombonist Patrick Crossland and double bassist Alexander Frangenheim, recording 12 short dialogs in the studio in Berlin, demonstrating great communication between these players as they perform in technical, unusual, and lyrical ways.

The rich but understated improvising trio of Ernesto Rodrigues on viola, Nuno Torres on alto saxophone, and Mike Bullock on modular synthesizer, named after the Greek term for wandering stars, an apt description of their balance of space, acoustic, and electronic sound.

"Alba" (Portugese for "white") presents 4 improvisations by Ernesto Rodrigues on viola, Louis Laurain on trumpet, Guilherme Rodrigues on cello and Ricardo Guerreiro on computer, slowly building subliminal works of subtle dialog using extended techniques and white noise.

Three Swiss improvisers - Hans Koch on bass clarinet, Alexandre Bable on percussion, and Gaudenz Badrutt on electronics - in an inventive and exceptionally well-balanced 7 part suite of tonal work, quick interplay, and extended techniques.

The 8-piece collective improvising group of Patricia Bosshard (violin), Laurent Bruttin (clarinets), Yannick Barman (trumpet), Jean-Jacques Pedretti (trombone), Vinz Vonlanthen (guitar), Dragos Tara (bass), Cyril Bondi (percussion), Christophe Berthet (sax).

An excellent dialog using strong dynamics and space from electroacoustic improvisers Ernesto Rodrigues (viola), Anotonio Chaparreiro (electric guitar) and Jose Oliveira (percussion).

Violist Ernesto Rodrigues and Ricardo Guerreiro on computer are joined by saxophonist Bertrand Gauguet for two improvisations of subtle & rich sound work: intertwining sax breathing, intense sonic pressure, and long string tones developing beautiful audio environments.

Five trees interpreted through electroacoustic improv from the quintet of Guilherme Rodrigues (cello, Gianna de Toni, double bass), Raphael Ortis (electric bass, objects) Christophe Berthet (sax), and Ernesto Rodrigues (viola); mysterious and compelling music.

The Chicago electroacoustic quartet of saxophonist, sine tone & harmonium player Boris Hauff, drummer/electronicist Steven Hess, and reedist Keefe Jackson, recording in the studio 3 freely improvised pieces that build in intensity as the album develops.

A quirky and ingenious duo from two saxophonists using extended techniques: Alipio C. Neto on soprano sax and Thelmo Cristovam on C-melody sax, using the reeds, body and breath to create an unusual and uncommon dialog.

The intense lowercase trio of Creative Source label leader Ernesto Rodrigues on viola, percussionist Christian Wolfarth on cymbals, and Ricardo Guerreiro on interactive computer performing the 6 part "All About Mimi" in the studio.

"Zwirn" means "twine" in German, an apt description of the interweaving sound that double bassists Daniel Studer and Peter Frey play together, in 7 freely improvised works of unusual technique and new musical structures.

Electroacoustic improvisation from the trio of Fabio Martini (clarinets, electroncis), Andrea Reali (voice, electronics) and Danilo Sala (drums, percussion & objects), unusual and sometimes absurdist dialog from three skilled innovators.

Two tracks from two groupings, anchored by Ernesto Rodrigues on viola and Jonathan Sielaff on bass clarinet, paired first with Vic Rawlings on cello & electronics and Leif Sundstrom on electronics; then with Gust Burns on piano and Manuel Mota on electric guitar.

Solo work recorded between 1992 & 2012 from Portugese electric guitarist Nuno Rebelo, using unusual techniques and approaches to render a wide and fascinating palette of sound and captivating playing styles.

Orchestrated from strings, piano, percussives, laptop & objects, this quintet creates a complex collective voice from high- and low-frequency drones, dissonant long string tones, slow piano chords, metallic sounds, and rich electronics.

A polyphonic approach to noise using open improv and graphic scores from this Portugese quartet performing on sax, cello, percussion, amplified objects, circuit bending and analog electronics.

A soft blending of Ernesto Rodrigues' viola, Radu Malfatti's trombone, and Ricardo Guerreiro's fragile sine waves and computerized hums over two patiently restrained, extended works of rich subtlety and gesture.

The trio of Australian violinist Jon Rose, UK electronics artist Richard Barrett, and bassist Meinrad Kneer, in an album of free electro-acoustic improv taking it's 11 tracks titles from the Greek name for rosin.

The Para trio with hornist Elena Kakaliagou, pianist Ingrid Schmoliner, and bassist/composer Thomas Skempowski contains within itself both composed and improvised musics, here in 8 pieces of exceptional and well-paced dramatic work.

An excellent quartet of UK and European improvisers recording at Gateway Studio, London in 1997, a set of 8 intriguing recordings emphasizing the acoustics end of free improvisation with accented electronic interventions.

Active and interactive percussion using extended techniques from the London trio of trumpeter Ian Smith, percussionist Stephen Flinn, and cellist Hannah Marshall.

Creative Sources label leaders Carlos Santos on computer and Enresto Rodrigues on harp are joined by saxophonist Katsura Yamauchi, using unorthodox techniques to create a beautifully floating album of modern ea-improvisation.

The trio of Paulo Curado, Paulo Chagas, and Joao Pedro Viegas on flutes and reeds, 11 pieces of mostly improvised music that blend idiomatic music from old and new approaches, while inventing a few of their own.

The coordinates in the title are from Switzerland, the location where Christoph Schiller and Lea Danzeisen recorded this unusual output from a pair of spinnet keyboards, manipulating them in highly unusual ways.

Far-ranging improvisation using open and creative techniques from the trio of guitarist Andreas Willers on acoustic and electric, bassist Meinrad Kneer (who runs the Evil Rabbit label) and drummer Christian Marien.

The acoustic bass duo of New Yorker Sean Ali and European Pascal Niggenkemper use unusual techniques and preparations for the large double bass to make a series of 22 concise, diverse, and engaging improvisations.

Unusual instrumentation and interaction from the trio of percussionist Mike Goyvaerts (Canaries on the Pole), saxophonist Jeffey Morgan (releases on Headlight, Konnex) and EMS synthesist Willy Van Buggenhout.

Referencing the work of French artist and composer Yves Klein, this large group of Creative Sources regulars perform the 4 part Monochrome Bleu Sans Titre, a subtle and rich work of acoustic and electronic improvisation.

11 short works and a longer "suite" from the duo of Israeli clarinetist Harold Rubin and German bassist Alexander Frangenheim, with electric bassist Mark Smulian making the group a trio on three tracks.

The string duo Bobun celebrates ten years of creative collaboration with this six piece suite, a studio recording of diverse improvisations that runs the gamut from lowercase minimalism to dense and technically exuberant interaction.

The Norwegian free-improvising trio of prepared pianist Dag-Filip Roaldsnes, alto saxophonist Kim-Erik Pedersen, and percussionist Tore Sandbakken in 14 darkly graceful and succinct works.

Six distinct "phases" of entrancing drones performed on an unprepared but slightly damaged harmonium by French improviser Monsieur Favriou, demonstrating the timbral range of the pedal-pumped reed organ.

Solo improvisation from Stefen Keune performing on sopranino and alto saxophones, intense playing that focuses on hard-blowing and extreme performance, wringing a singularly desperate yet astute language from the horn.

Electricity and metal trash object meet in a banging and sparking session of minimal improvisation from percussionist Elisabeth Flunger and electronic artist Tomas Tello.

A beautiful and subtle album presenting 3 extended improvisations from the patient and masterful hands of trumpeter Axel Dorner, violist Ernesto Rodrigues, and alto saxophonist Christine ABdelnour.

Israeli saxophonist Tom Soloveitzik, Turkish electronics player Korhan Erel (Islak Kopek), and US cellist Kevin Davis in an international dialog of rich and sonically charged electroacoustic improvisation.