The introduction to Senni’s unreleased work, in stark contrast to it, features an admirable sonic monochrome by Éliane Radigue. This is the second piece excerpted from 1978’s Triptych, originally composed for a choreography by Douglas Dunn, but eventually created in its purely musical guise. A 25-minute continuum characterized by a simple circular movement of the vibrating frequency, repeated in spirals in a mix that highlights a different gradation with each return, playing mostly in amplitude.