This work attempts to catalogue all the extant British music intended for performance on a solo keyboard instrument, both in manuscript and printed sources, from the earliest extant piece to the end of the Commonwealth period. The work is in two parts, volume one containing the list of sources and their contents, and volume two a thematic index of all the British pieces in those sources. Composers represented include, among others, John Bull, William Byrd, Giles Farnaby, Orlando Gibbons, William Lawes, Peter Philips, Thomas Tallis, and Thomas Tomkins.