The book is formatted for easy reference during prayer, with legible font and durable paper. The hardcover binding seems durable as well. The contents are as advertised, and this book is truly indispensable for anyone who wishes to pray the Liturgy of the Hours with the current antiphons (as of 2015). Each antiphon and hymn is listed with references to musical sources where the music can be found (Antiphonale Monasticum, Antiphonale Romanum II, etc.). Some of the antiphons have yet to be published in modern editions, but hopefully those will be forthcoming--Solesmes just recently published Antiphonale Romanum I, containing the current music for Lauds of Sundays and Feasts, for instance.