Mariusz Białkowski is a specialist in Gregorian semiology. From 2001–2005 he studied at the Pontifical Institute for Sacred Music in Rome and graduated with Prof. Nino Albarosa. In 2008 he did his doctoral thesis and obtained the habilitation to teach.

His focus is on promoting the ideas of Eugène Cardine; he teaches at different institutions in Poland (Music Academy Poznań, University of Poznań, post-graduate college in liturgical monophony at the Pontifical University John Paul II in Krakow and at the Diocesan Institut for Sacred Music Poznań). He also teaches in courses in and outside Poland (e.g. Lithuania, Slovakia, Italy, Switzerland, Canada). He has contributed scientific articles to several journals.

Białkowski is the founder of the Polish Association for Gregorian Chant which in 2009 has been accepted as Polish Section of AISCGre. He is also the founder and director of Schola Gregoriana Canticum Cordium, with whom he pursues liturgical and artistic activities. Since 2009 he edits and directs the Studia Gregoriańskie. In 2017 Białkowski was appointed Vice-President of the Polish Association for Sacred Music.