Il trovatore, the middle opera of Verdi"s famous "trilogy" of the 1850s (with Rigoletto and La traviata), is the sixth work to be published in The Works of Giuseppe Verdi. Based on Verdi"s autograph score and an examination of important secondary sources including contemporary manuscript copies and performing parts, the edition identifies and resolves numerous ambiguities of harmony, melodic detail, text, and phrasing that have marred previous scores. Scholars and performers alike will find a wealth of information in the critical apparatus to inform their research and interpretations. The lengthy introduction to the score discusses the work"s genesis, sources, and performance history as well as issues of instrumental and vocal performance practice, production and staging, and problems of notation. As an added feature of the introduction is an original study by Carlos Matteo Mossa of the creation of the libretto, based on the original draft and numerous other autograph documents.