What concepts must one have in order to understand and explain the nature and purpose, the plan and actualization, and the relational character of the liturgy? Volume 2: Fundamental Liturgy addresses this question in three parts - epistemology, celebration, and human sciences - which develop the foundational concepts of the liturgy. It leads the reader to a deeper understanding of the liturgy by examining the basic concepts that belong to its definition.

Articles and their contributors are Theology of the Liturgy, by Alceste Catella;Liturgical Symbolism, by Crispino Valenziano; Liturgy and Spirituality, by Jesus Castellano Cervera, OCD; Pastoral Liturgical Ministry, by Domenico Sartore, CSJ; Catechesis and Liturgy, by Domenico Sartore, CSJ; Liturgy and Ecclesiology, by Nathan Mitchell; The Liturgical Assembly, by Mark Francis, CSV; Participation in the Liturgy, by Anna Kai-Yung Chan; Liturgical Ministries, by Thomas A. Krosnicki, SVD; The Psychosociological Aspect of the Liturgy, by Lucio Maria Pinkus, OSM; Liturgy and Anthropology: The Meaning and the Method of the Question, by Crispino Valenziano; The Language of Liturgy, by Silvano Maggiani, OSM; Liturgy and Aesthetic, by Silvano Maggiani, OSM; Liturgy and Music, by Jan Michael Joncas; Liturgy and Iconology, by Crispino Valenziano; and Liturgy and Inculturation, by Anscar J. Chupungco, OSB and Silvano Maggiani, OSM