He is a composer, conductor,  educator and writer. His compositions are published in Italy, United States, Germany, China and France. He is author of more than 70 books translated in different languages.

Born in 1953, is the current abbot of the Benedictine monastery, Our Lady of Clear Creek Abbey, situated in Hulbert, Oklahoma. Born and raised in a Unitarian family, he converted to Catholicism during his university years and later pursued a monastic life. After serving in monasteries in France, Anderson helped establish Clear Creek Abbey in Oklahoma, which is known for its adherence to traditional monastic life and liturgy, including the 1962 Roman Missal and Gregorian chant. 

Don Nicola Bux, priest, was born in Bari on November 30, 1947. After completing classical studies in high school and law studies at the University of Bari, in 1970 he entered the Pontifical Regional Seminary Pius XI in Molfetta and in 1971 the Collegio San Paolo in Rome. He was ordained a priest on December 6, 1975. He obtained his bachelor’s degree in philosophy and theology at the Pontifical Gregorian University, and his licentiate and doctorate in Eastern Ecclesiastical Sciences at the Pontifical Oriental Institute in Rome.

He taught Catholic religion in middle and high schools. In 1982 he was appointed lecturer in Eastern liturgy at the Ecumenical-Patristic Institute of Theology “San Nicola” in Bari, later becoming professor of Eastern liturgy and at the same time vice-dean of the same Institute. He was also invited professor of sacramental theology at the Higher Institute of Religious Sciences of Bari and of Trani.

In 1985, he continued his research activity in Jerusalem at the Ecumenical Institute and the Studium Biblicum Franciscanum. A close collaborator of Benedict XVI, during his pontificate he served as consultant to the Congregation for Divine Worship and the Discipline of the Sacraments, the Congregation for the Doctrine of the Faith, the Congregation for the Causes of Saints, and the Office for the Liturgical Celebrations of the Supreme Pontiff.

Since 2007, Aldo Maria Valli has been Vatican correspondent for Tg1, after having long served in the same role for Tg3. He accompanied John Paul II and Benedict XVI on more than fifty trips.

He earned a degree in Classical Literature at the University of Genoa (supervisors Francesco Della Corte – Edoardo Sanguineti).

After holding a university scholarship in France and working in the USA, he won a competition as a researcher at the University of Chieti, simultaneously obtaining a PhD. Shortly thereafter, he moved to the Faculty of Humanities at the Catholic University of Milan, where he was a researcher and lecturer in Latin Literature. Following a national competition, he became Associate Professor at the University of Lecce (Teaching of Latin: 1998–2002). In 2002 he was appointed to the Faculty of Linguistic Sciences and Foreign Literatures at the Catholic University; currently, after winning the relevant competition, he is Full Professor of Latin Language and Literature. He also teaches Classical and European Culture, Comparative Literature, and Digital Humanities at the Milan and Brescia campuses.

He has also worked and continues to work at foreign universities: as a CNR research fellow at the University of Nice (France), and as Visiting Professor at the University of Kansas (Lawrence, KS, USA) and the University of San José (Costa Rica). He is currently Professor of Latin Literature at the Università della Svizzera italiana. He is an honorary member of the Department of Classics at the University of Leeds (UK). He frequently collaborates with various universities (especially Genoa, Rouen in France, Leeds and Durham in the UK, and the University of Virginia, Charlottesville, USA). He is a member of the University Committee for Latin Studies. On April 22, 2013, he was awarded the Doctorat honoris causa by the Institut Catholique of Paris. He serves on the scientific board of the journal History of Education and on the scientific board of CIRSIL, where he represents the Catholic University.

He has musical and musicological interests; he teaches History of Liturgical Music at the Higher Institute of Religious Sciences in Genoa, where he directs the vocal ensemble Ars Antiqua. He is titular organist of the Church of San Carlo in the same city, editor of the journal Studi Gregoriani, and a member of the scientific board of the Swiss musicological journal Vox Antiqua.

Bishop Kevin M. Britt Chair of Dogmatic Theology and Christology, has been at Sacred Heart Major Seminary since 1999. Prior to coming to Detroit, he taught at St. Edward's University in Austin, Texas from 1985-1999. Dr. Fastiggi received an A.B. in Religion (summa cum laude) from Dartmouth College in 1974; a M.A. in Theology from Fordham University in 1976; and a Ph.D. in Historical Theology from Fordham in 1987. He has done private research in Paris and Montréal, and he took part in a study-tour of Saudi Arabia and Bahrain sponsored by the National Council for U.S.-Arab relations. During his time at Sacred Heart, Dr. Fastiggi has taught courses in Ecclesiology, Christology, Mariology, church history, sacramental theology, and moral theology. He is a member of the Society for Catholic Liturgy, the Mariological Society of America, the International Marian Association, and an ordinary member of the Pontifical Marian Academy International (P.A.M.I). 

M.T.S., Ph.D., University of Notre Dame. Assistant Professor in the Department of Dogmatic Theology; Director of the Liturgical Institute. Former Department Chair of Theology and Ministry at Holy Family College, Manitowoc, WI. Research interests include modern liturgical history, especially the 19th and 20th century Liturgical Movements, biblical and patristic ressourcement, and liturgical theology. His articles and reviews have appeared in Worship, Antiphon, and Adoremus Bulletin. Member of Societas Liturgica, and the Fellowship of Catholic Scholars. Board member of the Society for Catholic Liturgy.

Edward Schaefer is president of The Collegium, a position to which he brings 40 years of experience in higher education.  His academic formation was in music; he has an expertise in Carolingian chant.

Don Roberto Spataro is a Salesian priest who, after teaching Church History in Jerusalem, was also a professor of Latin and Greek Language and Literature at the Pontifical Salesian University. He is also known as a promoter of the Ritus Romanus Antiquior and was appointed by Benedict XVI as Secretary of the Pontifical Academy for Latin (2012–2019).