"Jean-Luc Guionnet is an elusive figure. A Parisian artist active in many fields (music, visual arts, cinema), he has mostly worked in electro-acoustics but also has a career in free improvisation, playing alto saxophone, soprano saxophone, church organ, and piano. He has collaborated with Éric La Casa, Éric Cordier, and André Almuro on tape music. His main free improv and jazz projects include Hubbub, Schams, Return of the New Thing, and the Joe Rosenberg quintet.

Guionnet made scientific studies before shifting to fine arts. He studied musique concrete under Iannis Xenakis and Michel Zbar, but also pursued studies in philosophy (esthetics) with Geneviève Clancy. His first works date from the late '80s and are mostly collaborations with filmmaker André Almuro (some have been issued by Ground Fault). Then came a lasting partnership with electro-acousticians Éric Cordier and Éric La Casa. Together they wrote the series "Afflux." Guionnet also produces the Ateliers de Création Radiophoniques ("creative radio workshops") for France Culture. His eclecticism has kept him at bay of recognition -- because to the eye of the press it strips him from some credibility and because running careers in philosophy (he was co-director for the review Terre des Signes from 1993 to 1996), painting (he exhibited from 1992 to 1997), and music simultaneously tends to be time-consuming.

The release of an eponymous CD by Dan Warburton's free jazz quartet Return of the New Thing in 1999 on the respected label Leo Records introduced Guionnet to a wider audience. Since then his activities as an improviser have constantly stretched toward the fringes of experimentalism. His participation in the French-Swiss group Hubbub and his duo with guitarist Olivier Benoit (&Un, 2002) follow the school of Berlin reductionism."

"Percussionist Seijiro Murayama was born in 1957 in Nagasaki, Japan. He started performing improvised music in 1972, under some influence of Vinko Globokar and musicologist Fumio Koizumi. After graduated from Tokyo University in 1982 in Urdu studies he toured the USA with Keiji Haino as part of the seminal psychedelic band Fushitsusha. Returning to Japan after a period in NYC he continued playing drums and electronics in K.K. Null's noise/rock band A.N.P. (Absolut Null Punkt), while further exploring free improvisation. A relocation to France in 1999 led to collaborations that extended into dance, theatre and performance as well as ongoing partnerships with musicians Jean-Luc Guionnet, Eric Cordier, Michel Doneda, Mattin, Lionel Marchetti, among many others. After over a decade in Europe he relocated back to Japan in 2013.

His artistic principal is to work with the idea of the plural or inter-disciplinary relationships between music and other disciplines of art: dance, video, paintings, photos, literature etc. In this way, he collaborates with musicians, composers, and sound artists. Improvisation is always the major concern for him, even if it is not his artistic goal. His approach is based on the attention to space and place, to the energy of the audience and to the quality and perception of silence on various levels."