One of my very first "real" voice sources as a teenager, after years of exercises and the 24 Italian Songs, the assignment to buy this book felt like I had "arrived." The International collection, like most of their collections, houses the majority of Mozart's "greatest hits." Volume 1 is clearly set for lyric soprano. The International Editions are some of the most accurate voice and piano scores for singers in this caliber. Light and easy to use for an accompanist (after some breaking in,) it's easy to lug around, and prices remain reasonable. Operas represented are, "Le Nozze di Figaro," "Don Giovanni," "Die Zauberflote," "Idomeneo," "Lucio Silla," "La Finta Giardinaiera," "Zaide," "La Finta Semplice," and "Ascanio in Alba." Contents are listed in the summary. For teaching young, yet prepared, singers, this is a safe volume that will prepare them well.