Born in Buenos Aires, Argentina in 1941, Guillermo Gregorio became an American citizen in 2003. With his Chicago-based trio and other ensembles, Gregorio has performed his own compositions in Europe and the USA. In 2005, New World Records released his CD, Coplanar. Previously, the Swiss label hat Art issued six CDs, among them, Degrees of Iconicity (hat[now]ART 134)-named "Star of the Month" in Fono Forum (Germany) in 2000-and Faktura (hat[now]ART 146), also featuring his compositions. In addition, he has worked and recorded with various improvisational groups, as well as participated in ensembles that recorded the music of Anthony Braxton and Cornelius Cardew. In January 2001, he founded the Madi Ensemble of Chicago, which performs original and historical scores that draw from the conceptual foundation of the 20th century Argentinian avant-garde.
In 2007, Gregorio served a week-long residency as Composer-in- Residence at Wesleyan University, sponsored by the Edward W. Snowdon Fund and the Music Department. He has been Radio Curator of Armonia, a Musicians Residency Program created by the Chicago Symphony Orchestra. His composition Otra Musica 4 was nominated for special notice by the 2006 IAMIC Annual List selection panel (American Music Center/The International Association of Grantmakers).
He has a degree in Architecture, and taught history and theory of architecture and industrial design and visual communication at the University of Buenos Aires and the University of La Plata, Argentina. Currently, he teaches Art Appreciation and 20th Century Art at Purdue University NC. He has also worked as an architect and consulting designer in Buenos Aires and Los Angeles. "What affects my music more than any other thing," Gregorio explains, "is my involvement in visual arts, and my architectural and design experience." In his compositions, a reinterpretation of the fundamental and structural concepts of Constructivism converges with the historical experiences of Argentinean Conceptualism, Fluxus, intermedia synthesis, and graphic music. In addition to the acceptance of sound as material, constructive and geometrically generated ideas are used in scores ranging from conventionally notated statements to graphs, including planimetric projections of spatial structures.
He was an active participant on the Argentine music scene throughout the 1960s, '70s and early '80s. His involvement with New Music included both composing and playing saxophone, clarinet, and miscellaneous instruments in the Movimiento Música Más (Fluxus Group), the Experimental Group of Buenos Aires, and the Group of Contemporary Music of La Plata, featuring Fluxus events, multi-media spectacles, environmental pieces, experimental concerts, and aleatory realizations, as well as works by Cage, Ligeti, and avant-garde Argentinean composers. Documentation of this period of his career is available on the CD Guillermo Gregorio: Otra Música. Tape Music, Fluxus and Free Improvisation in Buenos Aires 1963-70 (Atavistic UMS/ALP209CD). He has also published many articles about avant-garde music (Musique Concrète, Futurism, Grupo Nuova Consonanza, Cornelius Cardew, AMM, Musica Elettronica Viva, Morton Feldman, Earl Brown, Robert Ashley, LaMonte Young, Albert Ayler, Bob Graettinger) .
As a composer and improviser, Gregorio has collaborated with Vinko Globokar, Stephen Dembski, Enrique Gerardi, Steffen Schleiermacher, Ran Blake, Jim O'Rourke, Ken Vandermark, Axel Dörner, Gene Coleman, George Graewe, Franz Koglmann, Le Quan Ninh, Akikazu Nakamura, Ab Baars, Sebi Tramontana, and Mary Oliver, among others.
Gregorio performs with Thaumatrope at Elastic, on October 26.