Optrum
(Unknownmix/Headz, UNKNOWNMIX 1/HEADZ 75) (Japan) (CD)
All tracks improvised and composed by Optrum
Optrum
Atsuhiro Ito: optron
Yoichiro Shin: drums
Recorded by Fumiaki Unehara at Swing Bamboo Studio, Tokyo, March 2006 (except 3, 10, 14)
(3) and (14) recorded by Optrum
(10) recorded live at Muryoku Muzenji
Mixed and edited by Yoichiro Shin and Atsuhiro Ito at Incomplete Studio
Mastered by Toshimaru Nakamura
Sound produced by Optrum
Inside cover photo by Paul Taylor
Inside card photo by Miho Kakuta
Design by Akira Sasaki
Released in June 2006