The Orthodox Chamber Choir was founded in 1995. The 25 singers of the choir come together from different parts of Finland to give concerts and to sing in the divine services of the Orthodox Church. The singers include professional musicians, students as well as enthusiasts of Orthodox church music. The repertoire of the choir mainly consists of Slavic and Finnish Orthodox church music from the 19th to the 21st century.
The Orthodox Chamber Choir has been conducted by Irina Tchervinskij-Matsi since 2017. She serves as a cantor in the Church of Holy Trinity in the Orthodox Parish of Helsinki.