The Escolania specializes in the interpretation of music specifically from the Montserrat School, founded by the Monastery of Montserrat. This school has been and will always be linked to the choir. It is one of the most respected schools in Europe because of its tradition, identity, and uniqueness. Of all the composers who are a part of this school, highlights of the group include Joan Cererols (17th century), Anselm Viola and Narcís Casanoves (18th century), Àngel Rodamilans, Anselm Ferrer, and Ireneu Segarra (20th century).

In addition to the Montserrat School, the Escolania often plays Renaissance era polyphony (mainly T.L de Victoria and G.P. da Palestrina) and various authors of all ages (Mendelssohn, Brahms, Britten, etc.).

In their performances outside of Montserrat, the Escolania will often play Catalan folk music by various Catalan composers.