SEMA was an 80's experimental-project by Robert Haigh who became well-known in the '90s for his ambient Drum & Bass-project Omni Trio.
In 1980, Robert formed the industrial/avant-funk bands Truth Club and Fote as well as his own label Le Rey Records.
Between 1982 and 1984 he released 4 LPs under the name SEMA on his own Le Rey label: Notes from Underground, Theme from Hunger, Extract from Rosa Silber and Three Seasons Only - which can be found in this box set release.
He also contributed to several Nurse With Wound (United Dairies) projects. Those recordings are provided as bonus tracks on this box set in addition to the 4LPs.
The music of SEMA integrates pianos, orchestral instruments and experimental techniques in a neo-classical and minimalist approach.
These legendary recordings employ a wide palette of light and shade, emotion, texture and atmosphere to produce a sound that is unique in its form and expression.
More information is available here.