"Born in 1961 in São Paulo, Brazil, Perelman was a classical guitar prodigy who tried his hand at many other instruments - including cello, clarinet, and trombone - before gravitating to the tenor saxophone. His initial heroes were the cool jazz saxophonists Stan Getz and Paul Desmond. But although these artists' romantic bent still shapes Perelman's voluptuous improvisations, it would be hard to find their direct influence in the fiery, galvanic, iconoclastic solos that have become his trademark.

Moving to Boston in 1981, to attend Berklee College of Music, Perelman continued to focus on mainstream masters of the tenor sax, to the exclusion of such pioneering avant-gardists as Albert Ayler, Peter Brötzmann, and John Coltrane (all of whom would later be cited as precedents for Perelman's own work). He left Berklee after a year or so and moved to Los Angeles, where he studied with vibraphonist Charlie Shoemake, at whose monthly jam sessions Perelman discovered his penchant for post-structure improvisation: "I would go berserk, just playing my own thing," he has stated.

Emboldened by this approach, Perelman began to research the free-jazz saxists who had come before him. In the early 90s he moved to New York, a far more inviting environment for free-jazz experimentation, where he lives to this day. His discography comprises more than 50 recordings, with a dozen of them appearing since 2010, when he entered a remarkable period of artistic growth - and "intense creative frenzy," in his words. Many of these trace his rewarding long-term relationships with such other new-jazz visionaries as pianist Matthew Shipp, bassists William Parker, guitarist Joe Morris, and drummer Gerald Cleaver.

Critics have lauded Perelman's no-holds-barred saxophone style, calling him "one of the great colorists of the tenor sax" (Ed Hazell in the Boston Globe); "tremendously lyrical" (Gary Giddins); and "a leather-lunged monster with an expressive rasp, who can rage and spit in violence, yet still leave you feeling heartbroken" (The Wire). Since 2011, he has undertaken an immersive study in the natural trumpet, an instrument popular in the 17th century, before the invention of the valve system used in modern brass instruments; his goal is to achieve even greater control of the tenor saxophone's altissimo range (of which he is already the world's most accomplished practitioner).

Perelman is also a prolific and noted visual artist, whose paintings and sketches have been displayed in numerous exhibitions while earning a place in collections around the world."

"Rudi Mahall (born 1966 in Nürnberg, Germany) is a contemporary jazz bass clarinetist.

While studying classical clarinet, Mahall shifted towards contemporary music, improvisation and jazz. He is, or was a member of following bands: Avantgardeband Die Hartmann 8, Der Rote Bereich (initially comprehending Frank Möbus, Marty Cook, Jim Black und Henning Sievert), the Trio Tiefe töne für Augen und Ohren (with Sievert and Bill Elgart), Carlos Bicas Azul and Die Enttäuschung (amongst others with Axel Dörner, Jan Roder). He carried out several projects and published CDs with Aki Takase, about the work of Eric Dolphy and others. Mahall participated to Alexander von Schlippenbach's recording of the complete works of Thelonious Monk, published by a prestigious Swiss label, and he is a member of the Globe Unity Orchestra. Moreover, he performed with Conny Bauer, Lee Konitz, Barry Guy, Karl Berger, Paul Lovens, Sven-Åke Johansson, Radu Malfatti, Ed Schuller, Ray Anderson, Kenny Wheeler, Hannes Bauer and many others.

Mahall performed at the Free Music Festival Jazz à Mulhouse in 2008, at the Moers Festival, the JazzFest Berlin, the Leverkusener Jazztage and jazz festivals in New York City, Amsterdam, München, Würzburg, Nürnberg, and he toured in Portugal, southern and eastern Africa."