The Italian Ars Nova Music: A Bibliographic Guide to Modern Editions and Related Literature is an essential resource for scholars, students, and enthusiasts of Italian Trecento music. This revised and expanded second edition reflects the vibrant and ongoing exploration of fourteenth-century Italian music, building on decades of meticulous scholarship. Originally compiled by Viola Hagopian, this guide has become a cornerstone in musicology, offering a comprehensive classification and concise descriptions of the wealth of materials related to this transformative period in music history. The Italian Ars Nova, marked by its intricate melodic structures and the rise of the madrigal, remains a field of dynamic research, as new manuscripts and interpretations continue to emerge. With significant contributions from international scholars and institutions like the Centro di Studi sull'Ars Nova Italiana del Trecento, this volume contextualizes the music within its cultural and historical framework. This edition not only revisits earlier discoveries but also incorporates new findings, making it a crucial tool for navigating the rich and ever-expanding scholarship on this period. This title is part of UC Press's Voices Revived program, which commemorates University of California Press's mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1973.