A large work for cello, viola, sinewaves and electronics from the quartet of Guilherme Rodrigues, Ernesto Rodrigues, Ferran Fages, and Barriere, the first two foundation members for Creative Sources, the latter two frequent collaborators, Barriere bringing a mathematical background to the improvisation that blends acoustic and electronic sources in compatibly sinister ways.

A trio of free improvisers recording five detailed and subdued dialogs in the studio, from trombonist Matthias Muller (Splitter Orchester), cellist Guilherme Rodrigues, and guitarist Eric Wong, collective improvisation guided by long pointillistic passages that converge into lyrical focal points, a profound example of concentrative discourse.

A quintet of string improvisers in discerning dialog using viola, cello, double bass, electric guitar, piano & harp, from regular collaborators Ernesto & Guilherme Rodrigues, Miguel Mira, and Abdul Moimeme, plus Aural Terrains label leader Thanos Chrysakis.

Recording in Portugal, the quintet of Aural Terrains label leader Thanos Chrysakis on piano, Creative Sources label leader Ernesto Rodrigue on viola, son Guilherme Rodrigues on cello, Miguel Mira on double bass and Abdul Moimeme on electric guitar, three parts of microscopic collective electroacoustic improvisation of highly focused, detailed interplay.

A subtle album of acoustic interaction recorded at Berlin's Noiseberg from the quartet of Miriam den Boer Salmon on violin, Ernesto Rodrigues on viola & zither, Fredrik Rasten on acoustic guitar, and Guilherme Rodrigues on cello & percussion, sounding almost electronic in their frictional technique and harmonic overtones, ebbing and flowing from active interaction to tranquil discourse.

An extended improvisation of mostly quiet, occasionally cantankerous, but always intriguing free music, primarily acoustic playing with a strong cast of string players, plus reeds, keys, and computer, creating suspenseful music of great tension and impressive restraint as the sound evolves in gradations and facets of sound.

"3 Phases", or 3 aspects of the approach that violist Ernesto Rodrigues applies to improvisation, in 3 different groupings over 3 different concerts at O'Culto da Ajuda, in Lisbon, here in an electroacoustic ensemble with Miguel Mira, Guilherme Rodrigues, Joao Silva, Eduardo Chagas, Paulo Curado, Noel Taylor, Miguel Almeida, Andre Holzer, Andre Hencleeday, Carlos Santos, and Joao Valinho.

An exciting meeting of multi-generational and multi-national, forward-thinking free improvisers performing live at Klub Demboh in Berlin in 2017, from the sextet of Axel Dorner (trumpet), Mia Dyberg (alto saxophone), Pierre Borel (alto saxophone), Ernesto Rodrigues (viola), Tristan Honsinger (cello) and Guilherme Rodrigues (cello).

Recording live in Berlin at Werkhalle Wiesenburg, the quartet of Portuguese father/son string players Ernesto Rodrigues on viola, Guilherme Rodrigues on cello, Danish saxophonist Mia Dyberg on alto sax, and Polish double bassist Tomo Jacobson present a precisely controlled concert of subtly detailed free improvisation using impressive technique and momentum.

An unusual improvising string quartet plus alto saxophone, Thea Farhadian (violin), Ernesto Rodrigues (viola), Guilherme Rodrigues (cello), Klaus Kurvers (double bass) and Nuno Torres (alto saxophone) present the 11-part "De-col//age_", a slowly-developing work balancing unconventional approaches to their instruments with more conventional strategies.

A live recording from the acoustic septet Free Music 7tet of Ernesto Rodrigues (viola), Luiz Rocha (clarinets), Guilherme Rodrigues (cello), Eduardo Chagas (trombone), and (piano), Hernani Faustino (double bass) and Paulo Ferreira Lopes (drums), performing at O'Culto da Ajuda, for five improvisations from active free improv to lowercase exploration.

A suite in seven parts named in Latin with abstract spiritual connotations from the Portuguese free improvising trio of Paulo Galao on clarinet & bass clarinet, Guilherme Rodrigues on cello, and Nuno Morao on percussion, each movement using subdued yet detailed and active motion, a confident and adept meditation of powerfully controlled communion.

"While the previous Garcia/Branche CD seemed also improvised to me, this five-person work is of the two the more improvised one. The quintet of players also like their sounds to be sustaining, placing bows on strings, but also motorized...

German composer working in Budapest Nikolaus Gerszewski does not consider the score for this piece a composition, but rather a basis for a process, which is executed live at Fabrica Braco de Prata with Gerszewski himself plus improvisers Ernesto & Guilherme Rodrigues, Pedro Roxo, Nuno Torres, Armando Pereira, Carlos Santos, Pedro Castello Lopes & Andre Mota.

Glasgow's Improvisers Orchestra from the CCA Glasgow performing three free improvisations and a discretely structured piece by Raymond MacDonald.

Saxophonist Guionnet guides this quartet of sax, viola, cello, & percussion, including label leader Ernesto Rodrigues, delicate yet detailed improv of a high order.

A mysterious album of viola, viola d'amore, organ, and field recordings, merging the compositional minimal approach of Wandelweiser artist Eva-Maria Houben with Creative Sources performers Ernesto & Guilherme Rodrigues, the field recordings creating a virtual setting of environmental stillness, evoking slow motion in the unique "thisness" of haecceity.

Two CDs representing two extended improvisations of the IKB Ensemble with slightly different personnel, with each ensemble slowly unfolding an amazingly textured work of acoustics and electronics with strong intent and incredible technique, balanced by close listening and attention to detail; an excellent 21st century improvisation orchestra captured live.

Sealed copy. A large Lisboa ensemble presenting a collective improvisation titled after a painting by Yves Klein, with performers including Ernesto Rodrigues (baritone violin), Miguel Mira (bass), Nuno Torres (sax), Carlos Santos (electronics), Rodrigo Pinheiro (piano), &c. &c.

Portugal's IKB Ensemble is an electracoustic improvising ensemble with a strong string and wind section, balanced with electric guitar, electronics, and percussion, each album focusing on an object--an art work, Dracaena Draco (Dragon Tree), Chelonoidis Nigra (Giant Tortoise)--and here taking on the Ornithorhynchus Anatinus, or platypus, in 3 fascinating movements.

IKB continue their series of albums graced with taxonomic latin names for animals, here with the North Island brown kiwi bird, as the string- and wind-heavy electroacoustic ensemble led by violist Ernesto Rodrigues present this extended improvisation of subtle motion and understated complexity live at O'Culto da Ajuda, in Lisbon, Portugal in 2017.

Ernesto Rodrigues leads a 16 piece orchestra of strings, reeds, winds, voice, brass, accordion, electric guitar, electronics and percussion through the elaborately restrained work "Chelodnis Nigra", rewarding the careful listener with fascinating layers of sound.

The large IKB electroacoustic ensemble of diverse orchestration led by violist Ernesto Rodrigues, where each release is characterized by an animal, here with the long-snouted seahorse in an extended improvisation recorded at CreativeFest XIII at O'Culto da Ajuda, Lisbon, 2019, building to undulating cycles of intense interaction of absolutely precise control.

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.

Recording at the 12th CreativeFest at O'Culto da Ajuda, in Lisbon, Portugal, the IKB ensemble is represented by 20 musicians for this performance, merging acoustic and electronic instruments including strings, brass, winds, self-made instruments, and percussion in a concert of intense constraint & patience, seething with detail and replete with consummate skill.

One of Portugal's most interesting large scale lowercase ensembles led by violist Ernesto Rodrigues, with frequent Creative Sources collaborators including Nuno Torres on alto sax, Carlos Santos on electronics, Guilherme Rodrigues on cello, Miguel Mira on bass, 14 musicians move with subtlety in a tapestry of electroacoustic resonance and mystique.

Unusual approaches to string improvisation from the quartet of Ernesto Rodrigues (viola), Guilherme Rodrigues (cello), Maria da Rocha (violin), and Miguel Mira (double bass), using extended techniques in subtle yet detailed discourse yielding unexpected qualities to their instruments.

Recorded at CreativeFest#12 in Lisbon at O'Culto de Ajuda, the 21-piece electroacoustic ensemble Isotope takes on the chemical element Radium in a gripping piece of evolving improvisation, intensely restrained and extremely detailed, orchestrated with cello, baroque violin, double bass, acoustic & electric guitars, zither, psaltery, winds, brass, keys, electronics and percussion.

The Creative Sources core string improvisers of violist Ernesto Rodrigues, cellist Guilherme Rodrigues, cellist Miguel Mira, and double bassist Alvaro Rosso, with frequent collaborator percussionist Vasco Trilla, are joined by German violinist Harald Kimmig (Trio Kimmig) for a dynamic album that fluctuates from acoustic lowercase to rapid pointillistic improv.

Incredible and telepathic ea-oriented improv from violist Ernesto Rodrigues, saxophonist Martin Kuchen, cellist Guilherme Rodrigues, and electronicist Carlos Santos.

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.

Electric guitarist Olaf Rupp joins the father son/duo of violist Ernesto Rodrigues and cellist Guilherme cello, in studio recordings from Berlin in 2017, as three disparate strings intertwine in acoustics and electronics for an intensely evolving two part work, a textured tapestry of slow bowing, sustaining tones, unusual progressions, and odd percussive invention.

Excellent, fun and slightly twisted free improvising quintet with Dennis Gonzalez, Mark Sanders, Alipio Netom, and father/son team Ernesto Rodrigues and Guilherme Rodrigues.

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.

The Berlin-based electroacoustic Red List Ensemble founded by cellist Guilherme Rodrigues in a studio recording of the 3-part "Scope", improvised music created in real time using extensive techniques to create and raise tension in a game of contrasts, exploring orchestration in micro-groups through organization of surfaces that are opposed in terms of timbre and sound texture.

Two freely improvised works performed on cello, sine waves, cracklebox, bottle, synth, cornet and objects from the quartet of frequent collaborators Guilherme Rodrigue, David Area Guillermo Torres, and Tomas Gris, a mix of subtle improvisation and subsuming sound.

Three tracks of acoustic improv from an understated string quartet that uses extended techniques and the whole of their instruments to make unusual and rewarding music.

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The concept of a spiegel, or mirror, is explored by this perceptively patient electroacoustic octet led by violist Ernesto Rodrigues, each of the 3 tracks an evolution of the first recorded improvisation, the 2nd "Spiegel" layering and reacting to the first recording, and the 3rd to the previous two, ultimately reflecting a conversation of 24 virtual musicians.

A live recording at O'Culto da Ajuda, Lisbon, during the 2017 CreativeFest #11 from the quartet of Ernesto Rodrigues on viola, Guilherme Rodrigues on cello, Gianna de Toni on double bass, and Vasco Trilla on percussion, a sinuous, curving extended improvisation of subtle shades, with certain rotations more forceful, but always gravitating to quietude.

Not your average Creative Sources releases, the father/son collaboration of Ernesto Rodrigues on viola and Guilherme Rodrigues on cello are joined by 2/3 of Red Trio — Hernani Faustino on double bass and Rodrigo Pinheiro on piano — with Pedro Carneiro on marimba, for an impressively active set of Swirling, Whirling and Twirling improvisations.

A large group under the direction of violinist Ernesto Rodrigues (also on harp, metronome & objects) in 4 extended improvisations of great suspense and tension through sound and silence.

"A friction quartet, at times quite energized. In addition to viola, cello, and double bass, the instrumentation is notable for Kriton B.'s daxophone, a rather obscure instrument in the class of "friction idiophone," which consists of a...

Recorded at the Galeria Monumental during the Small Format Materials II Festival, Sul is a large string-oriented ensemble led by Ernesto Rodrigues that includes percussionist Andrew Drury and double bassist Hernani Faustino, alongside Creative Sources core players, orchestrated with viola, violin, cello, double bass, classical guitar, zither, percussion and objects.

Recorded in the studio in 2017, "Cyclic Symmetry" presents an electroacoustic trio of Ernesto Rodrigues on viola, Guilherme Rodrigues on cello, and CS mainstay Carlos Santos on field recordings, in a minimal work suggested to be heard on infinite loop, contrasting deep silence with sections accenting the slow, interwining harmonics of both Rodrigues' string work.

Strings and small percussion imbue this darkly beautiful set of extended improvisations from the Portugese trio of Ernesto Rodrigues on viola, Guilherme Rodrigues on cello, and Monsieur Trinite on small percussion; creative richly open soundscapes with intriguing interventions.

1. Plane, Line Segments, Rays And Some Dissipations 49:49

Fragile and understated with long spacious sections, the trio of Ernesto Rodrigues on viola, harpsichord, e-bow guitar and field recordings, Guilherme Rordrigues on cello, and Denis Sorokin on ukelele and pitch pipes, distill the sense of isolation amid patient motion through the red city, sections defined by cars passing and augmented with birds; peaceful and beautiful.

Three strings--cello from Guilherme Rodrigues, double bass from Adam Pultz Melbye, and viola from Ernesto Rodrigues--plus harmonium and objects from Kriton Beyer, in a live performance at Kuhlspot Social Club in Berlin, each of the 9 movements a concentrative work named with a three-letter onomatopoeia, as the players draw sound from a mysterious dark distance.

Recording in the studio in Lisbon, Portugal, the free improvising lowercase/subtle momentum quintet of Ernesto Rodrigues on viola, Guilherme Rodrigues on cello, Bruno Parrinha on bass clarinet, Luis Lopes on electric guitar, and Vasco Trilla on percussion, demonstrate intense control and remarkable concentration through the five parts of "{ Lithos }".