Robert Damian Ellis (born 13 February 1962) is a producer, arranger, instrumentalist and composer. He is best known for his work with PJ Harvey, with whom he has been most closely associated as producer, arranger and musician since 1990.His own compositional work, which could be described as being something akin to contemporary classical music, has been released on six recordings, three under the name Spleen and three under his own name: Music for the home (2000) and Music for the home - Volume 2 (2004) for The Leaf Label, and The Nostalgia Machine for KPM.