Liturgical music is an integral part of the Christian worship (mass), consisting of prayers, which are recited or singed and written in liturgical books. The first chapter of this paper deals with the history of liturgical music, which dates back to the early Christian era, when the rules in liturgical singing were not yet in place, until the emergence of the Gregorian choral. The second chapter describes the very development of liturgical music, from the Gregorian choral to spiritual chansons and ballads, and the folk songs performed in liturgy today. The same chapter touches on ‘worship’ in the church – a way of prayer that is increasingly popular and visited in some Zagreb parishes. The central part of the paper focuses on the amateur church’s vocal-instrumental ensemble of young people, which serves as a model for my research. Youth is making a difference, both in any system and in Church. Therefore, by observing and analysing this ensemble, it was explored how young people were guided by the animation of liturgical music; their motive; whether they comply with the prescribed rules on liturgical music and how much popular spiritual music affects their animation. Several key figures were also interviewed (a young priest, an older priest, an elderly parishioner, a younger parishioner) and thus investigated who suits today’s spiritual music; the extent to which; whether it has places in the liturgical service and whether, and how much, daily listening to popular or any other types of music influences the perception of music in liturgy.