Each track on this album is named for a tractor brand (Eicher, Kubota, &c.) and the liner notes are directions regarding a tractor's maintenance, as the ea-trio of UK improvisers Pat Thomas on piano & electronics, Dominic Lash on double bass, and Lawrence Casserley on a signal processing instrument provide 10 inventive improvisations that validate a sound working condition.

Lawrence Casserley is a pioneer of real time electroacoustic music, since the 60s working with other artists and developing his Signal Processing Instrument, using physical gestures to process and morph sounds; here he works with British vocalist and Deep Listening teacher Viv Corringham in an other-worldly collaboration of voice and electonics.