The "Graduale Novum Editio Magis Critica Iuxta SC 117" is a comprehensive complete edition that deals with the restitution of melodies from the Graduale Romanum. This critical edition is based on the oldest adiastematic manuscripts and has been published since 1996 in the journal "Beiträge zur Gregorianik." The present edition is specifically designed for liturgical practice as well as for scholarly purposes. It includes the Mass chants for Sundays and feast days and integrates revisions directly into the square notation. Additionally, the neumes are added in Metz and St. Gall notation above and below the staff, which facilitates the use and understanding of the melodies. This edition is an indispensable tool for anyone engaged with Gregorian chant and liturgical music.