Kazuhisa Uchihashi is a Japanese guitarist involved in free improvisation music. In 1988 he joined the band the First Edition, and in 1990 formed the band Altered States. He was also a member of Otomo Yoshihide’s Ground Zero from 1994 to 1997. Uchihashi also plays Daxophone, and in addition to his role as a free improviser, Uchihashi has been the musical director for Osaka theatre group Ishinha, and has set up his own record label, Innocent Records

Beat Keller is an electric guitarist, guitarist, composer and sound engineer based in Winterthur, Switzerland and Berlin, Germany.
He is amongst the important Swiss musicians in the field of improvised and experimental music. Through the exploration of extended playing techniques, guitar tunings and the use of an electric feedbacker guitar, he has developed a unique musical language.