Question: Are Toshiko Koshijima and Guy Chadwick both responsible for writing the majority of their respective bands material?
Sentence (from "Guy Chadwick"): Guy Stephen Chadwick (born 21 March 1956 in Hanover, Germany) is an English singer, songwriter and guitarist, best known as the frontman of alternative band, The House of Love, for which he wrote the majority of the band's material.
Relevant evidence: Yes