"The St. Gregory Hymnal and Catholic Choir Book" is a collection of Christian hymns and songs that has become a classic among Catholic church music publications. This book contains various pieces of music intended for performance in mass and religious rites. Thanks to the rich musical heritage that unites different eras and styles, this book helps to create an atmosphere of prayer and exaltation during divine services. Thanks to "The St. Gregory Hymnal and Catholic Choir Book", believers have the opportunity to sing together and experience the unity of faith through music.