While much has been written about the repertoire of musical works for pianoforte duet, ensemble literature for the other classical, historical, and contemporary keyboard instruments has usually been mentioned in only incidental ways. The goal of this bibliography is to advance the playing and listening enjoyment of works written for two or more players at the individual or combined instruments of the clavichord, harpsichord, and organ. It offers a starting point for future research, covering material from the 16th through the 20th centuries, and lists works that keyboard performers can use...