JSCM Instrumenta is the Journal of Seventeenth-Century Music’s on-line reference series. JSCM Instrumenta are individual collections of data published by the Society for Seventeenth-Century Music to provide resources that aid in the study and performance of seventeenth-century music. Unlike articles in JSCM, instrumenta are revised by the author when new information is discovered. The date of the most recent revision is indicated on the contents page of each volume. View the instrumenta at www.sscm-jscm.org.