Abstract
This online edition is a work-in-progress. A key music theory text within the fourteenth-century Ars nova tradition that has received little attention is the so-called Omni desideranti treatise. The treatise is found in three manuscript sources of Italian provenance dating from the fourteenth and fifteenth-centuries: in a manuscript copied by G. Frater de Anglia in Pavia in 1391, and now preserved in the Newberry Library in Chicago (Ms. 54.1, ff. 52v-56v, hereafter Cn); in a manuscript of Italian and Catalan origin dating from the early fifteenth century, Seville, Biblioteca Capitular y Colombina, Ms. 5-2-25, ff. 63r-64v (hereafter Sc); and a late fifteenth-century paper manuscript of Italian origin, Siena, Biblioteca comunale, Ms. L.V.30, ff. 129r-129v (hereafter Su). This online edition of the Omni desideranti treatise is intended as a proof-of-concept model for a digital editing approach to medieval music theory. It follows TEI encoding standards.