Proceedings of the International Lute Symposium Utrecht 1986 / ed. by Louis Peter Grijp and Willem MookSecretum Musarum I : Het gheheymenisse der Zang-Godinnen 1615, Paradisus Musicus Testudinis 1618 / Nicolaes ValletThe harpsichord and its repertoire : proceedings of the International Harpsichord Symposium Utrecht 1990 / ed. by Pieter DirksenAspects of the historical harp : proceedings of the International Historical Harp symposium Utrecht 1992 / ed. by Martin van SchaikThe recorder in the 17th century : proceedings of the International Recorder Symposium, Utrecht 1993 / ed. by David LasockiInstrumental music of the trecento : a critical edition of the Instrumental Repertoire of the Manuscript London, British Library, Add. 29987 / ed. by Martin van Schaik, Christiane SchimaA time of questioning : proceedings of the International Early Double-Reed symposium Utrecht 1994 / ed. by David LasockiSweelinck studies : proceedings of the International Sweelinck Symposium Utrecht 1999 / ed. by Pieter DirksenSecretum Musarum II : het tweede boeck van de luyt-tablatuer, ghenoemt het Gheheymenisse der sangh-goddinnen = Le second livre de tablature de luth, entitulé le secret des muses / Nicolaes ValletRegia Pietas : (Pieté Royalle) 1620 : 150 Psalms for lute and voice ad lib. / Nicolaes Vallet ; with an introd. by Louis Peter Grijp and a bibliogr. note by Robert Spencer