Hierodeacon Jerotej (Petrović) has been engaged in church music since 1992. After joining the monastery of St. Archangels in Kovilj in August 1998, he continued to develop his knowledge of church music and eventually in 2003 became a Protopsaltis and Precentor of the Monastery Kovilj Choir.
In 2009 he went on to improve his musical skills in Athens, where, after two years of studying, he obtained a title of Church Chanter at Conservatoire of Athens in the class of Lykourgos Angelopoulos, Archon Protopsaltis (First Chanter) of the Holy Archdiocese of Constantinople. In 2011 hierodeacon Jerotej graduated from the Archdiocesan School of Church Music in Athens in the class of professor Kostas Angelidis, receiving the Certificate of Church Music Professor. During his stay in Athens he actively participated in the work of Greek Byzantine Choir led by Archon Protopsaltis Lykourgos Angelopoulos. After graduation he went on to his postgraduate studies in church music in the class of dr Georgios Konstantinou at the School of Byzantine Music of the Holy Metropolis of Nicaea in Athens, which he successfully completed in 2013.
In 2011, with the blessing of Mr. Irinej, the bishop of Bačka, hierodeacon founded a school of church music, St John Damascene, in Novi Sad, where he teaches Chanting and the History of Church Music. He also runs the choir within the school.