Sachiko Matsubara, who usually records as Sachiko M, is a Japanesemusician.
She was a member of Otomo Yoshihide's Ground Zero from 1994 to 1997, where she used a sampler. More recently, she has concentrated on music made from sine waves. Together with Toshimaru Nakamura, who plays the "no-input mixing board" (a board with the outputs connected to the inputs, thus producing feedback) and with whom she has collaborated, she is considered one of the main representatives of onkyo movement.
She has collaborated with a variety of other musicians, including Otomo Yoshihide as part of Filament, with him and Yoshimitsu Ichiraku as part of I.S.O. and with Ami Yoshida, with whom she and Utah Kawasaki won the 2003Prix Ars Electronica for digital musics.
External links
Sachiko M at Improvised Music from Japan (http://www.japanimprov.com/sachikom/index.html)
SachikoM, Toshimaru Nakamura and Yoshihide Otomo need no introduction to anyone following electro-acoustic improv ("EAI"), and specifically Tokyo's Onkyo scene; they're the three most celebrated proponents of minimal electronic improvisation in Japan.
The first segment of the piece seemed to signify only hints of movement underneath a horizon, and after a resulting clamor, Sachiko's "voice" is like the initiation of the normal morning routine.
Sachiko's sampler has a brief, fragmented volley with Otomo's turntable, moderated by the sine from Nakamura's no-input mixing board; I'm hard pressed to read much into it, but it's one of the cooler moments on the set.