Original LP from 1978; classic works for tape and voice. "Sten Hanson has worked in the area of experimental music, literature and intermedia art since the early sixties. His large and varied production includes instrumental and electronic music, music drama, performance, music for dance and theatre, works for radio and television, literary works and large outdoor events. This record presents his main work in the text-sound field -- The Trilogy of Vocal Energy -- and also two examples of the shorter works of which he has produced many during the years.