Instrumental Music Virginalists Over 600 pieces for harpsichord survive in such collections as My Lady Nevell's Booke (1591) by Byrd, Parthenia (1612 or 13) by John Bull (1563-1628), Byrd and Gibbons, and Fitzwilliam Virginal Book (c. 1621) by all the active composers of the school. Forms include madrigal transcriptions, dances, descriptive pieces,