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Guillermo Gregorio is a pioneering figure in the world of jazz and free improvisation, known for his masterful performances on the clarinet and saxophone, as well as his innovative compositions. Born in Buenos Aires in 1941, Gregorio's musical journey began at the age of 14, and his early interests spanned both jazz and contemporary classical music. His background in architecture and design, which he studied and taught in Buenos Aires and later in Chicago, has significantly influenced his unique approach to music, blending spatial and gestural elements into his compositions.

Gregorio's career is marked by his involvement in experimental music scenes, including the Fluxus activities of Argentine performance groups like Movimiento Música Mús. He has lived and worked in various cities around the world, including Vienna, Los Angeles, Chicago, and New York, each location adding layers to his diverse musical language. His discography reflects a deep exploration of sound and form, with notable works like "Degrees of Iconicity" and "Two Trios" showcasing his ability to seamlessly blend improvisation with structured composition.

Whether performing or composing, Guillermo Gregorio continues to push the boundaries of jazz and free improvisation, offering audiences a rich and thought-provoking musical experience. His work is a testament to his enduring curiosity and dedication to the art of sound.