The article deals with the study of historical aspects of children's choir singing in church tradition. The author considers characteristic features and origins of children's church choir singing. The reasons for using children's choir singing in Christian churches are investigated. The author characterizes the features of the conditions for utilization of children's choir singing in Christian churches. The distinction between children's church choir singing in the Orthodox East and Catholic West is shown. Children's choirs in Catholic churches were formed mainly from among orphan boys from orphanages at temples or monasteries. In the Catholic society of that time, childhood was not yet considered as a special status. Social assistance to c...