To enhance the liturgical and general cultural horizon of the students she initiated a course on the “History of Eastern Orthodox worship”, which still continues. From 1998 she collaborated with the "Orthodox Encyclopedia" ecclesiastical scholarly centre as a member of the editorial board and curator of the “Worship and Church music” department (since 2004 an independent department of “Church music”); she was the author of a number of entries on early Russian and Byzantine church music. Under her tutorship two PhD theses were submitted, one by Olga Tiurina (“Early Russian Melismatic Chant: the Great Chant”, 2011) and the other by Irina Starikova (“The Psalmody of the Vigils in Early Russian Chant Art”, 2013). In 2004/2005 Irina Lozovaya was the co-founder with Anna Yeliseyeva of the "Asmatikon" ensemble, which specialises on performing early Russian and Byzantine liturgical chants. She was a member of the editorial board of the Moscow conservatory and influenced the publishing policy of the conservatory with regard to early Russian chant. She was the author of numerous articles and entries on the problems of the history and theory of Eastern Christian liturgical chant art in various anthologies of articles and encyclopedias including "Musical Encyclopedia" (', 1973-1982), "Musical Encyclopedic Dictionary" (', 1990), "Die Musik in Geschichte und Gegenwart", "New Grove Dictionary of Music and Musicians" (2nd edition, Vol. 29, 2004), "Orthodox Encyclopedia" (2000-2017). Characteristic of Lozovaya’s work is her comprehensive approach to studying the liturgical chant books. The main task of their investigation, in her opinion, requires a combination of the methods of both historical and theoretical musicology and therefore presupposes a good knowledge of historical liturgiology, palaeography and codicology . Important for Lozovaya’s scholarly method was a consideration of early Russian music within the historical “Byzantine” perspective: The book "Paraklete" on early Russian chant (in the Russian State Archive of the Early Acts, abbreviated as RGADA, f. 381 (Syn. Typ.), 80) became the main subject of her scholarly research. The investigation resulted in a monograph “Early Russian Notated Paraklete of the 12th Century: Byzantine Sources and the Typology of the Early Russian Copies” (Moscow, 2009).