"Kazuhisa Uchihashi (内橋和久, Uchihashi Kazuhisa) is a Japanese guitarist involved in free improvisation music. Born in 1959 in Osaka, Uchihashi began to play the guitar at age 12, playing in various rock bands, though he later studied jazz 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, has held improvisation workshops (a project known as New Music Action) in various cities in Japan, as well as London, Oslo, and currently in Vienna also. Uchihashi has set up his own record label, Innocent Records a.k.a. Zenbei Records, had held a music festival annually since 1996 Festival BEYOND INNOCENCE."

"Tatsuya Yoshida, born in Kitakami, Iwate is a Japanese musician; drummer and composer who is the only consistent member of the renowned progressive rock duo Ruins, as well as Koenji Hyakkei. He is also a member of the progressive rock trios Korekyojinn and Daimonji. Outside his own groups, Yoshida is renowned for his tenure as drummer in the indie progressive group YBO2, a band also featuring guitarist KK Null, whom he also joins in the current line up of Zeni Geva and he has played drums in a late edition of Samla Mammas Manna. He has been cited as "[the] indisputable master drummer of the Japanese underground". Along with his participation in bands, he has also released several solo recordings."